1/44 Hydraulic cylinder Mill type Series CDH2 / CGH2 Component series 1X Nominal pressure 250 bar (25 MPa) RE 17334/10.07 Replaces: 09.05 Overview of contents Contents Page Technical data 2 Diameter, weights 2 Areas, forces, flows 3 Tolerances 3 IHC-Designer: Engineering software 4 Mounting style overview 4 Ordering details 4 Plain clevis at base MP3 6 Self-aligning clevis at base MP5 8 Round flange at head MF3 10 Round flange at base MF4 12 Trunnions MT4 14 Foot mounting MS2 16 H4652_d Features – Standards: DIN 24333, ISO 6022 and VW 39 D 921 – 6 mounting styles – Piston Ø: 40 to 320 mm – Piston rod Ø: 25 to 220 mm – Stroke length up to 6 m Contents Page Flange connections 18 Position measuring system 20 Proximity switch 24 Screwed coupling 26 Self-aligning clevis 27 Fork clevis 28 Mounting block 29 Buckling 32 End position cushioning 35 Spare parts 38 Tightening torques 40 Seal kits 41 Engineering software Interactive Catalog System Download of brochures www.boschrexroth.com/ics www.boschrexroth.com/ business_units/bri/de/downloads/ihc Online Courtesy of CMA/Flodyne/Hydradyne ▪ Motion Control ▪ Hydraulic ▪ Pneumatic ▪ Electrical ▪ Mechanical ▪ (800) 426-5480 ▪ www.cmafh.com
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RE 17334 2007-10 PDFs/BRH CYL/Rexroth...Hydraulic cylinder 1/44 Mill type Series CDH2 / CGH2 Component series 1X Nominal pressure 250 bar (25 MPa) RE 17334/10.07 Replaces: 09.05 Overview
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1/44Hydraulic cylinderMill type
Series CDH2 / CGH2
Component series 1X Nominal pressure 250 bar (25 MPa)
2/44 Bosch Rexroth AG Hydraulics CDH2 / CGH2 RE 17334/10.07
Technical data (for applications outside these parameters, please consult us!)
Standards: The installation dimensions of the cylinders and mounting styles meet the requirements of DIN 24333 and ISO 6022.Nominal pressure: 250 bar Static proof pressure: 375 bar Higher operating pressures on request.The specified operating pressures are only valid for applications with shock-free operation. If extreme loads occur, e.g. as happens in high sequence cycles, the fixings and piston rod thread connections need to be designed for durability (fatigue strength).Installation: OptionalPressure fluid / pressure fluid temperature range: HL, HLP, HFD-R: –20 °C to +80 °C HFA: +5 °C to +55 °C Water glycole HFC on requestViscosity range: 2.8 to 380 mm2/sISO cleanliness class Maximum permissible degree of pressure fluid contamination is to ISO 4406 (c) class 20/18/15.Stroke velocity: Up to 0.5 m/s (depending on the connection
ports), higher stroke velocities on requestBleed screw as standard: Secured against unscrewingUndercoat: The hydraulic cylinders are, as standard, painted (colour tone gentian blue RAL 5010) with a max. thickness of 80 μm. Other colour tones on request.Acceptance: Each cylinder is tested to Bosch Rexroth standards.Safety notes:For assembly, commissioning and maintenance cylinders, please take the operating guidelines stated in RE 07100-B into account!Service and repair work may only be carried out by Bosch Rex-roth AG and specifically trained personnel. No warranty claims will be accepted for damage resulting from assembly, mainte-nance and repair work not carried out by Bosch Rexroth AG.Checklists for hydraulic cylinders:Cylinders, the technical and/or operating data of which differ from the paramters given in the data sheet, can only be offered as special variants on request. For the preparation of offers, de-viations of technical data and/or operating data must be descri-bed in the checklists for hydraulic cylinders (RE 07200).
4/44 Bosch Rexroth AG Hydraulics CDH2 / CGH2 RE 17334/10.07
Ordering details
CDH2 MT4See pages 14, 15
CGH2 MT4See pages 14, 15
CDH2 MS2See pages 16, 17
CGH2 MS2See pages 16, 17
CDH2 MP5See pages 8, 9
CDH2 MF3See pages 10, 11
CGH2 MF3See pages 10, 11
CDH2 MP3See pages 6, 7
CDH2 MF4See pages 12, 13
Mounting style overview
1) = Only piston rod Ø 25 to 110 mm2) = Only piston rod Ø 25 to 140 mm3) = The trunnion can be located as required. Dim. „XV” must always be stated in clear text
in mm in case of an order.4) = Only piston Ø 40 to 200 mm5) = Only possible in conjuction with position
measuring system „T“ 6) = Only piston Ø 63 to 200 mm7) = Only MF3; MT4; MS2; not standardised8) = Seal versions A, B is not possible Piston rod version „H“ is not possible
End position damping possible from piston rod Ø 45 mm CG version is not possible
Piston rod Ø 25 mm is not possible Take the max. stroke lengths on page 21 into account
9) = Only piston Ø 80 to 320 mm 10) = Not possible for version MF4 11) = Standard for seal versions M, T, S and piston Ø 220 to
320 mm Not possible for seal versions A, B 12) = For the CG version only one self-aligning clevis is fitted13) = For the CG version only one one rod end14) = Not standardised15) = Take the permissible stroke lengths on pages 32 to 34
The ICS (Interactive Catalog System) is a selection and engi-neering aid for hydraulic cylinders. With the help of the ICS, designers of plant and machinery can quickly and reliably find the optimum hydraulic cylinder solution through logic-guided type code queries. This software helps to solve design and en-gineering tasks more quickly and efficient. After having been
guided through the product selection, the user gets the exact technical data of the selected components as well as 2D and 3D CAD data in the correct file format for all common CAD systems quickly and reliably.
This allows users to reduce costs while increasing their com-petitiveness.
Differential cylinder = CD Double rod cylinder 7) = CG
Series = H2
Mounting stylesPlain clevis at base = MP3 Self-aligning clevis at base = MP5 Round flange at head = MF3 Round flange at base = MF4 Trunnions 3) = MT4 Foot mounting 14) = MS2
Piston Ø (40 to 320 mm) See page 2
Piston rod Ø (25 to 220 mm) See page 2
Stroke length in mm 15)
Design principle Head and base flanged = A
Component series10 to 19 unchanged installation and connection dimensions = 1X
Connection ports/versionPipe thread to ISO 228/1 Metric ISO thread Flange porting pattern to ISO 6162 Tab.1 (=̂SAE 3000 PSI) Flange porting pattern to ISO 6162 Tab.2 (=̂SAE 6000 PSI) Flange porting pattern to ISO 6164 Tab.1 Flange porting pattern to ISO 6164 Tab.2 Pipe thread to ISO 228/1 with a ring flange that has a machined flat
6), 10)
9), 10)
4), 10)
10)
= = = = = = =
B M F D K H C
Connection port/position at head and base = 1
1
2
3
4
Viewed on the piston rod
= 2= 3= 4
Piston rod versionHard chromium plated = C Hardened and hard chromium plated 1) = HNickel plated and hard chromium plated 2) = N
Option 2 B = Flange grease nipple C = 5) Analogue output
4-20 mA F = 5) Analogue output
0-10 V D = 5) Digital output SSI Y = 13) Enter piston rod
extention LY in clear text
in mm W = Without option
Option 1A = Screwed coupling,
both sides F = 11) Guide rings E = Inductive proximity
switch without plug-in connector
Plug-in connector – separate order, see page 24
T = 8) Position measuring system (magnetostrictive) without plug-in connector
Plug-in connector – separate order, see page 23
W = Without option
Seal versionSuitable for mineral oil
to DIN 51524 HL, HLP and HFA
M = Standard seal system T = Servo quality/reduced friction A = Chevron seal kits
Suitable for phosphate ester HFD-R
S = Servo quality/reduced friction B = Chevron seal kits
End position cushioningU = Without D = 4) Both sides, self adjusting E = Both sides, adjustable
Piston rod endH = Thread for self-aligning clevis CGKD F = 12) With mounted self-aligning clevis
CGKD
H2 A 1X
Ordering examples:
CDH2 MT4/63/45/350A1X/B1CHDMWW, XV = 300 mm
CDH2 MP5/80/56/500A1X/B1CHDMWW
CGH2 MF3/100/70/500A1X/B1CHUMWW
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5)
EE
Ø D
A
KK
Ø M
M
Ø D
WA
A XC + X*
PJ + X*Y
Ø D42)
EENV
G 1
/41)
Ø D42)
Ø R
A
VE
X1 X1
MR
10)
LM1
"A"
"A"L1
Ø C
D
EW
"A-A"
Ø R
A
VE
6/44 Bosch Rexroth AG Hydraulics CDH2 / CGH2 RE 17334/10.07
Plain clevis at base MP3
CDH2 MP3
CDH2 MP3: for seal versions „A”, „B” and AL-Ø 160 - 320 mm
5) = Throttle valve only with end position damping "E" (180° to the bleed point)
6) = Piston Ø not standardised7) = Dimensions for cylinder with seal versions M, T and S8) = Dimensions for cylinder with seal versions A and B9) = Tolerance: f810) = Grease nipple; cone head form A to DIN 7141211) = Associated pin Ø r6
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5)
EE
Ø D
A
KK
Ø M
M
Ø D
WA
A XO + X*
PJ + X*Y
Ø D42)
EENV
G 1
/41)
Ø D42)
Ø R
A
VE
X1 X1
MS
10)
LTM1
"A"
"A"L1
EP
EX
Ø C
X11)
ZZ
"A-A"
Ø R
A
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8/44 Bosch Rexroth AG Hydraulics CDH2 / CGH2 RE 17334/10.07
Self-aligning clevis at base MP5
CDH2 MP5
CDH2 MP5: for seal versions „A”, „B” and AL-Ø 160 - 320 mm
X* = Stroke length Stroke and overall length tolerances to ISO 8135
1) = Bleeding: When viewed on the piston rod, the orientation always offset by 90° to the pipe connection (in a clockwise direction)
2) = Ø D4 max. 0.5 mm deep3) = M50 x 2 available on request4) = For flange connections see separate table on
pages 18 and 19
5) = Throttle valve only with end position cushioning "E" (180° to the bleed point)
6) = Piston Ø not standardised7) = Dimensions for cylinder with seal versions M, T and S8) = Dimensions for cylinder with seal versions A and B9) = Tolerance: f810) = Grease nipple; cone head form A to DIN 7141211) = Associated pin Ø r6
X* = Stroke length Stroke and overall length tolerances to ISO 8135
1) = Bleeding: When viewed on the piston rod, the orientation is always offset by 90° to the pipe connection (in a clockwise direction)
2) = Ø D4 max. 0.5 mm deep3) = M50 x 2 available on request
4) = For flange connections see separate table on pages 18 and 19
5) = Throttle valve only with end position cushioning "E" (180° to the bleed point)
6) = Piston Ø not standardised7) = Dimensions for cylinder with seal versions M, T and S8) = Dimensions for cylinder with seal versions A and B9) = Tolerance: f810) = Double roded cylinders are not standardised
X* = Stroke length Stroke and overall length tolerances to ISO 8135
1) = Bleeding: When viewed on the piston rod, the orientation is always offset by 90° to the pipe connection (in a clockwise direction)
2) = Ø D4 max. 0.5 mm deep3) = M50 x 2 available on request
4) = For flange connections see separate table on pages 18 and 19
5) = Throttle valve only with end position cushioning "E" (180° to the bleed point)
6) = Piston Ø not standardised7) = Dimensions for cylinder with seal versions M, T and S8) = Dimensions for cylinder with seal versions A and B9) = Tolerance: f8
X* = Stroke length Stroke and overall length tolerances to ISO 8135
1) = Bleeding: When viewed on the piston rod, the orientation is always offset by 90° to the pipe connection (in a clockwise direction)
2) = Ø D4 max. 0.5 mm deep3) = M50 x 2 available on request4) = For flange connections see separate table on
pages 18 and 195) = Throttle valve only with end position damping "E"
(180° to the bleed point)
6) = Piston Ø not standardised7) = Dimensions for cylinder with seal versions M, T and S8) = Dimensions for cylinder with seal versions A and B9) = Tolerance: f810) = Take the minimum stroke length „X*min.” into account11) = Double roded cylinders are not standardised12) = The trunnions can be located as required.
Dim. „XV” must always be stated in clear text, in the case of an order, in mm. Take „XVmin.” and „XVmax.” into account.
13) = XVmid. recommendation: The trunnions are located in the middle of the cylinder
14) = Tolerances according to EN ISO 9013: Thermal Cutting
X* = Stroke length Stroke and overall length tolerances to ISO 8135
1) = Bleeding: When viewed on the piston rod, the orientation is always offset by 90° to the pipe connection (in a clockwise direction)
2) = Ø D4 max. 0.5 mm deep3) = M50 x 2 available on request4) = For flange connections see separate table on
pages 18 and 19
5) = Throttle valve only for end position cushioning "E" (180° to the bleed point)
6) = Piston Ø not standardised7) = Dimensions for cylinder with seal versions M, T and S8) = Dimensions for cylinder with seal versions A and B9) = Tolerance: f810) = Take the minimum stroke length „X*min.” into account11) = Not standardised12) = 2 mm deep counter bore for the DIN 912 S.H.C.S.
The screws must not be subjected to shear loads. The forces have to be distributed by keys
X* = Stroke length1) = Thread depth for seal versions M, T and S2) = Thread depth for seal versions A and B3) = Max. operating pressure for associated flanges in bar4) = Flange porting pattern to ISO 6162 Tab.1 relates to a
flange porting pattern to SAE 3000 PSI5) = Flange porting pattern to ISO 6162 Tab.2 relates to a
22/44 Bosch Rexroth AG Hydraulics CDH2 / CGH2 RE 17334/10.07
Position measuring system
The contactless, absolute position measuring system is rated up to 500 bar. Its function principle is based on the magneto-strictive effect. In connection with this, a torsion impulse is triggered off when two magnetic fields meet. This impulse is directed from the point of measurement via the wave guide inside the measuring scale to the sensor head. The transmission time is constant and virtually independent of temperature. It is proportional to the position of the magnet and can therefore be used as a reference for the actual position value and is converted into a direct analogue of digital output in the sensor head.
Technical data (for applications outside these parameters, please consult us!)
Operating pressure bar 250
Analogue output V 0 to 10
Load resistance kΩ ≥ 5
Resolution Infinite
Analogue output mA 4 to 20
Load resistance Ω 0 to 500
Resolution Infinite
Digital output SSI 24 Bit grey coded
Resolution μm 5
Measuring direction Forwards
Linearity (absolute accuracy)
Analogue % mm
≤ ±0.02 % (with reference to the measurement length) min. ±0.05
Digital % mm
≤ ±0.01 % (with reference to the measurement length) min. ±0.04
Repeatability % mm
±0.001 (with reference to the measurement length) min. ±0.0025
Hysteresis mm ≤ 0.004
Supply voltage V DC 24 (± 10 % with an analogue output)
Current consumption mA 100
Residual ripple % s-s ≤ 1
Current consumption
V DC mA
24 (+ 20 %/– 15 % with a digital output) 70
Residual ripple % s-s ≤ 1
Protection Tube and flange IP 67
Sensor electronics IP 65
Operating temperture Sensor electronics °C – 40 to + 75
1) For analogue output: 6-pin Amphenol - Plug-in connector Material No. R900072231 (plug-in connector is not included within the scope of supply, it must be ordered separately)
Position measuring system (analogue output) Component plug (viewed on the pin side)
Position measuring system (digital output) Component plug (viewed on the pin side)
Mounting style
1) For digital output: 7-pin Amphenol - Plug-in connector Material No. R900079551 (plug-in connector is not included within the scope of supply, it must be ordered separately)
Connection allocation
Pin Cable Signal / current Signal / voltage
1 grey 4...20 mA 0 - 10 V
2 pink Gnd Gnd
3 yellow n. c. 10 - 0 V
4 green n. c. Gnd
5 brown +24 V DC (±10%) +24 V DC (±10%)
6 white Gnd Gnd
Pin Cable Signal / SSi
1 grey data (–)
2 pink data(+)
3 yellow tact (+)
4 green tact (–)
5 brown +24 V DC (+20%/–15%)
6 white 0 V
7 – n. c.
MP3, MP5
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X4
L7
X3
PL + X*
1) 1)
L7
X3
PM + X*
1) 1)
X5 3)
24/44 Bosch Rexroth AG Hydraulics CDH2 / CGH2 RE 17334/10.07
Proximity switch
CDH2
CGH2
Plug-in connector with a 5 m cable Material No. R900026512 (plug-in connector is not included with the scope of supply, it must be ordered separately)
Plug-in connector, angled with a 5 m cable (the orientation of the cable exit is not definable) Material No. R900021404 (plug-in connector is not included with the scope of supply, it must be ordered separately)
X* = Stroke length1) = The proximity switch is always located
opposite to the pipe connection2) = Piston Ø 220 - 320 mm,
the proximity switch does not overhang3) = Piston Ø 220 - 320 mm,
the angled plug-in connector is not possible
AL Ø
MM Ø
PL PM L7 X3 X4 X5
40 25 28
112 112 87 94 170 125
50 32 36
110 110 103 98 175 130
63 40 45
125 125 116 103 180 135
80 50 56
138 138 128,5 108 185 140
100 63 70
161 161 139 116 195 150
125 80 90
189 189 161 126 205 160
140 90 100
209 209 171 146 225 180
160 100 110
228 228 188,5 151 230 185
180 110 125
254 254 199 159 235 190
200 125 140
264 264 227 166 245 200
220 140 160
310 310 252 177 2) 255 – 3)
250 160 180
310 310 265 187 2) 265 – 3)
280 180 200
369 369 293 199 2) 275 – 3)
320 200 220
375 375 290 209 2) 285 – 3)
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+
–
1
4
3
12
34
G1/4
38
Ø 20
M16x2
SW19
26/44 Bosch Rexroth AG Hydraulics CDH2 / CGH2 RE 17334/10.07
Technical data (for applications outside these parameters, please consult us!)Function PNP N/O
Permissible pressure bar 500
Operating pressure V DC 10 … 30
Including the residual ripple % ≤ 15
Voltage drop V ≤ 1.5
Rated operating voltage V DC 24
Rated operating current mA 200
No load current mA ≤ 8
Residual current μA ≤ 10
Repeatability % ≤ 5
Hysteresis % ≤ 15
Ambient temperture range °C – 25 … + 80
Temperature drift % ≤ 10
Switching frequency Hz 1000
Protection Active area IP 68 to DIN 40050
Proximity switch IP 67 to DIN 40050
Housing material Material No. 1.4104
Proximity switch
Inductive proximity switches are used as a reliable end position control for hydraulic cylinders. They are an important element, in providing safety systems, interlocks and/or other machine functions where signals safely and exactly monitor the end position. The up to 500 bar rated high pressure proximity switches operate without contact and contacts and are, there-
Connection allocation2)
1)
3)
1) Brown2) Black3) Blue
For pressure measurement or bleeding. For installation in the bleed/measuring port. Coupling with check valve function, i.e. it can also be connected when pressure is present.
Scope of supply:
Coupling AB 20-11/K1 with NBR seal Material No. R900009090 Coupling AB 20-11/K1 V with FKM seal Material No. R900001264
Coupling (dimensions in mm)
fore wear-free. Due to safety reasons the proximity switch is protected against being screwed in too deep. The switching distance can, therefore not be adjusted. For the version with proximity switches (Option 1 „E“), the cylinders are fitted with proximity switches on each end.
40 25 / 28 CGKD 25 M20 x 1,5 25,5 2° M8 x 20 25 0,6550 32 / 36 CGKD 32 M27 x 2 30 4° M10 x 25 49 1,1563 40 / 45 CGKD 40 M33 x 2 39 4° M10 x 30 49 2,180 50 / 56 CGKD 50 M42 x 2 47 4° M12 x 35 86 4100 63 / 70 CGKD 63 M48 x 2 58 4° M16 x 40 210 7,2125 80 / 90 CGKD 80 M64 x 3 74 4° M20 x 50 410 15140 90 / 100 CGKD 90 M72 x 3 85 4° M20 x 60 410 19160 100 / 110 CGKD 100 M80 x 3 94 4° M24 x 60 710 25,5180 110 / 125 CGKD 110 M90 x 3 105 4° M24 x 60 710 36,5200 125 / 140 CGKD 125 M100 x 3 116 4° M24 x 70 710 52,5220 140 / 160 CGKD 160 M125 x 4 145 4° M 24 x 80 710 82,5250 160 / 180 CGKD 160 M125 x 4 145 4° M 24 x 80 710 82,5280 180 / 200 CGKD 200 M160 x 4 190 4° M30 x 100 1500 168320 200 / 220 CGKD 200 M160 x 4 190 4° M30 x 100 1500 168
AL = Piston Ø
MM = Piston rod Ø1) = Grease nipple, cone head form A according to
DIN 714122) = Associated pin Ø r6
Note:
The geometry and dimensions may vary depending on the make.
For combination with other mounting elements, the usability must be verified.
3) = The self-aligning clevis must always be screwed to the piston rod thread stop. Subsequently, the clamping screws have to be tight-ened to the specified torque.
4) = Weight of the self-aligning clevis
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1); 5)
CL2
CL1
CM
KK
LE
CE
Ø C
K
3)MAb
2)
ER
CV
28/44 Bosch Rexroth AG Hydraulics CDH2 / CGH2 RE 17334/10.07
40 25 / 28 CCKB 25 M20 x 1,5 34 32 M10 x 35 49 1,4
50 32 / 36 CCKB 32 M27x 2 42 40 M12 x 40 85 2,8
63 40 / 45 CCKB 40 M33 x 2 52 50 M16 x 50 210 5,2
80 50 / 56 CCKB 50 M42 x 2 64 63 M20 x 60 425 9,5
100 63 / 70 CCKB 63 M48 x 2 75 71 M24 x 80 730 21,5
125 80 / 90 CCKB 80 M64 x 3 94 90 M30 x 100 1450 38,2
140 90 / 100 CCKB 90 M72 x 3 109 100 M36 x 120 2480 8)
160 100 / 110 CCKB 100 M80 x 3 120 110 M36 x 130 2480 8)
AL = Piston Ø
MM = Piston rod Ø1) = Grease nipple, cone head form A according to
DIN 714122) = Associated pin Ø m6
(pins and pin securing rings are included within the scope of supply and not mounted at the point in time of the supply)
3) MA = Tightening torque The fork clevis must always be screwed to the piston rod thread stop. Subsequently, the clamping screws have to be tightened to the specified torque.
4) m = Weight of the fork clevis8) = Upon request
Note:
The geometry and dimensi-ons may vary depending on the make.
For combination with other mounting elements, the usabili-ty must be verified.
(pins and pin securing rings are in-cluded within the scope of supply and not mounted at the point in time of the supply)
4) m = Weight of the clevis bracket8) = Upon request
Clevis bracket CLCD (dimensions in mm)
Note:
The geometry and dimensions may vary depending on the make.
For combination with other mounting elements, the usability must be verified.
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1)
1)
1)
L
L
L L
L
L
L
L
32/44 Bosch Rexroth AG Hydraulics CDH2 / CGH2 RE 17334/10.07
The permissible stroke length with a flexibly guided load and a 3.5 safety factor against buckling can be obtained from the ap-propriate table. With a deviating cylinder installation, the per-missble stroke length has to be interpolated. Permissible stroke lengths for non-guided loads are available on request.
The calculation for buckling are carried out as follows:
1. Calculation according to Euler
2. Calculation according to Tetmajer
A
LK = 0,7 L
CB
LK = L LK = 2 L
π2 • E • IF = if λ > λg ν • LK
2
d2 • π (335–0.62 • λ)F = if λ ≤ λg 4 • ν
Buckling
The influence of the mounting style on the buckling length:
Permissible stroke lengths (dimensions in mm)
AL MM Permissible stroke lengths at Max. available
stroke lengthsInstallationØ Ø 100 bar 160 bar 250 bar
0° 45° 90° 0° 45° 90° 0° 45° 90°
40 25 28
195 385
200 400
215 445
130 295
135 300
140 320
40 215
45 220
55 225 0°
50 32 36
380 505
390 525
430 595
280 395
285 405
300 430
195 290
200 295
205 305
200063 40
45480 640
500 660
550 750
365 505
370 515
385 550
255 380
260 385
265 395
80 50 56
590 765
615 800
690 930
455 615
465 630
495 685
330 470
335 475
345 495
100 63 70
750 940
780 985
910 1195
595 775
610 800
660 885
445 605
455 615
470 650
125 80 90
970 1235
1015 1300
1200 1610
780 1030
805 1070
880 1200
595 825
605 840
635 895 45°
140 90 100
1075 1335
1130 1405
1360 1770
875 1120
905 1165
1000 1325
675 900
685 920
725 985
3000160 100
1101175 1430
1230 1500
1480 1875
955 1195
985 1240
1085 1400
735 955
750 975
785 1040
180 110 125
1250 1620
1310 1710
1570 2160
1010 1365
1045 1420
1150 1620
775 1100
790 1125
830 1205
200 125 140
1435 1795
1510 1900
1860 2450
1180 1525
1220 1590
1365 1840
915 1240
935 1270
990 1370
220 140 160
1620 2075
1710 2200
2180 3000
1360 1810
1415 1890
1630 2280
1090 1510
1120 1560
1200 1730 90°
250 160 180
1805 2250
1910 2395
2490 3300
1520 1960
1590 2060
1850 2500
1220 1630
1250 1690
1360 1880
6000280 180
2002075 2510
2200 2670
2900 3700
1775 2200
1880 2310
2170 2820
1450 1850
1490 1920
1620 2140
320 200 220
2135 2550
2270 2720
3030 3820
1820 2230
1900 2340
2260 2880
1470 1860
1510 1930
1660 2170
1) Perm. stroke length
Mounting styles MP3, MP5
Explanation:
E = Modulus of elasticity in N/mm2
= 2.1 x 105 for steell = Moment of inertia in mm4 for a circular cross- section area
ν = 3.5 (safety factor)LK = Free buckling length in mm (dependent on the mounting style, see sketches A, B, C)d = Piston rod Ø in mmλ = Slenderness ratio 4 • LK E = λg = π d 0.8 • ReRe = Yield strength of the piston rod material
Formulas: m = Moved mass in kg v = Stroke velocity in m/s kv = See table on page 36
Extending:
Extending:
pS = System pressure in bar A1 = Piston area in cm2 (see page 3) A3 = Annulus area in cm2 (see page 3) α = Angle in degrees with reference to the horizontal plain
End position cushioning: The objective is to reduce the speed of a moving mass, whose centre of gravity lies on the cylinder axis, to a level, at which neither the cylinder nor the machine, into whih the cylinder is installed, can be damaged. For speeds over 20 mm/s we recommend the use of end position cushioning so that the energy can be absorbed without the use of any additi-onal equipment. Checks must always be carried out whether, also at lower speeds, with high masses end position cushio-ning is required.
Cushioning capacity: When braking masses via the end position cushioning, the design constricted cushioning capacity must not be exceeded. Cylinders with end position cushioning can only utilise their full cushioning capacity when the entire stroke length is used.
With the adjustable end position cushioning „E“ an additional throttle valve is aded to the „D“ version. The end position cushioning „E“ makes it possible to optimise the cycle times. The maximum cushioning capacity can only be achieved when the throttle valve is fully closed.
The calculation depends on the factors of weight, velocity, system pressure and installation position. Therefore, the variable Dm is to be calculated from weight and speed, the variable Dp from system pressure and installation position. These variables are then used to verify the permissible
End position cushioning
cushioning performance in the „cushioning capacity“ diagram. The interception point of the variables Dm and Dp must always be below the cushioning capacity curve of the selected cylinder. The values in the diagram refer to an average oil temperature of + 45 to +65 °C and with a closed throttle valve.
For special applications with very short stroke times, high speeds or masses, special cylinders with special end position cushioning can be offered on request.
When fixed or adjustable end stops are used, then special measures have to be taken!
mDm = ; 10K K = kv (0.5–v)
m • 9.81 • sinαDp = pS – A1 • 10
m • 9.81 • sinαDp = pS + A3 • 10
Damping length
AL Ø mm 40 50 63 80 100 125 140 160 180 200 220 250 280 320
Head side 21 20 23 25 25 25 33 33 37 37 76 81 86 90
Base side 21 20 23 25 25 25 33 33 37 37 76 81 86 90
Court
esy
of CM
A/F
lodyn
e/H
ydra
dyn
e ▪
Motion C
ontr
ol ▪
Hyd
raulic
▪ P
neu
mat
ic ▪
Ele
ctrica
l ▪
Mec
han
ical
▪ (
800)
426-5
480 ▪
ww
w.c
maf
h.c
om
1000000
100000
10000
1000
100
100 20 40 60 80 100 120 140 160 180 200
Ø320Ø280Ø250Ø220Ø200Ø180Ø160Ø140
Ø125Ø100Ø80Ø63Ø50Ø40
1
36/44 Bosch Rexroth AG Hydraulics CDH2 / CGH2 RE 17334/10.07
End position cushioning
AL Ø mm 40 50 63 80 100 125 140 160 180 200 220 250 280 320
1) If, for standard applicaions, the calculated interception point from Dm and Dp is within the indicated area, then we recommend that a cylinder is used without end position cushioning.
End position cushioning
Cushioning capacity: RetractingD
m →
Dp →
Dm
→
Dp →
1)
1)
Court
esy
of CM
A/F
lodyn
e/H
ydra
dyn
e ▪
Motion C
ontr
ol ▪
Hyd
raulic
▪ P
neu
mat
ic ▪
Ele
ctrica
l ▪
Mec
han
ical
▪ (
800)
426-5
480 ▪
ww
w.c
maf
h.c
om
1184 7 3 18 5 7 2
61818618
10 12 16
11 14 1717
38/44 Bosch Rexroth AG Hydraulics CDH2 / CGH2 RE 17334/10.07
Spare parts
CDH2
Piston rod Piston"M"
"A / B"
"T / S "
"M / T / S"
"A / B"
1 Head
2 Base
3 Barrel
4 Piston rod
5 Piston
6 Cushioning bush
7 Flange
10 Base MP3
11 Base MP5
12 Round flange MF3
14 Round flange MF4
16 Trunnion MT4
17 Foot MS2
18 Seal kit: Wiper Rod seal Piston seal O-ring Guide bush
application can be derived from our information. The details stated do not release you from the responsibility for carrying out your own assessment and verification. It must be remembered that our products are subject to a natural process of wear and ageing.