312 ServoFit ® Precision Gearheads V.27 800.711.3588 • www.stober.com KSS Series: RIGHT ANGLE — Solid Shaft/Hollow Output Features • 4:1 to 55:1 raos (higher raos available. Contact STOBER.) • Quiet running (<53dB(A)) • Extra seal between motor and reducer to prevent ingress • Totally enclosed – no breather to allow contaminates in or oil out • Mounng flexibility to fit the applicaon • Error free motor mounng and quick changeover with toleranced pilot on motor plate • Magnec oil filtraon to remove contaminants to prevent breakdowns • Build and ship in one day • Assembled in the USA General Specifications Ambient Temperature 0°C to +40°C (104°F) [Unit temperature <80°C Max] Backlash <10 standard arcmins (see performance overview chart, (page 314) Coang Stainless steel housing Degree of Protecon IP69K Direcon of Rotaon Input and output rotate the SAME direcon, see page 315 Efficiency 97% Input RPM Up to 6,000 RPM Installaon Requires 10.9 fasteners for tapped holes housing. See page 328, for more informaon Lubricaon Lubricated for life - food grade Mobil SHC CIBUS 220 Opon: Mobil 600XP200, synthec Mobil SHC630 Mounng Posion Must be specified, see page 315 Warranty 3 year standard warranty SHIPS in 1 DAY! NO EXPEDITE FEE FOR 24 HOUR SERVICE The KSS is the stainless steel version of our K gearbox. Capable of handling the harshest washdowns and requiring zero maintenance, the KSS is ideal for your causc environments. Every gearbox is made to order. STOBER will custom whatever you need to fit your applicaon. Contact us today to learn more.
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Round output flange (side 3 or 4 only, please specify)Tapped holes around outputFoot mounting (side 1 or 5 only)
7 Ratio 0040 Ratios range from 4:1 to 272:1 (0040=4:1; 2720=272:1)
8 Motor AdapterMS1RMS2RMS3R
3 input sizes (see also motor mounting plate option) (See “Motor Mounting Plate Option”, page 315)
* Mounting Position E12, E34EL5, EL6
Please spedify. Required special instruction for all units (See “KSS Mounting Position Options”, page 315)
1 2 3 4 5 6 7 8
Part Number Examples: KSS 1 0 2 V F 0040 MS1R E12 *
KSS Series Ordering Options At-a-GlanceUsing the Selection Data table later in this section, select the KSS Series Gearhead with the appropriate performance and design options tailored to your motor choice and exact application requirements. Use the part number guide below as a reference to build a part number for the complete gearhead assembly.
Lubrication• KSS Series comes standard with food
grade lubrication; optional synthetic available. Contact STOBER for details.
KSS Series: RIGHT ANGLE — Solid Shaft/Hollow Output
KSS Performance OverviewKSS Series performance is dependent on several factors including duty cycle, bearing design, gearhead size and stage configuration, among others. Use the chart below for preliminary evaluation, then use the following performance chart and selection information on the following pages for specific performance sizing and selection.
Hollow Bore Nm 240 310 3801) Tested at 1.5% of nominal torque and recorded on the output side of the gearhead. For lower backlash, contact STOBER technical support.2) Measurement at one (1) meter distance with input speed (n1) of 2000 RPM.3) Rating based on output speed (n2) of 20 RPM. For values at other speeds see page 316
Design OptionOutput V Solid Shaft V Solid Shaft V Solid Shaft A Hollow A Hollow W Double BushingHousing F Round Flange G Tapped Holes NG Foot Mount F Round Flange G Tapped Holes G Tapped Holes
KSS Series Output Options Diameters in BOLD BLUE are configurations readily available from inventory. Contact STOBER for delivery on other output sizes.
STOBER ServoFit Gearheads fit the motor of your choice with the appropriate motor mounting plate assembled between the motor and the gearhead.
NOTE: When ordering a gearhead:
• Specify the motor manufacturer and part number
• Provide the motor drawing with dimensions, or specify the motor mounting dimensions (per the list shown at right)
KSS Series Motor Mounting Plate Option (Motor information required with Motor Adapter option)
Customer Required Dimensions for Properly Sized Motor Mounting Plate
Pulling forces or overhung load of pulleys, sheaves, sprockets, etc. on the reducer output shaft must not exceed the allowable limits shown in the load/life/speed calculations, page page 316.
Note: Overhung load is measured at the center of the shaft extension. No overhung load is encountered when a reducer is flange mounted and/or coupling connected to another unit. However, the shafts of all components must be accurately aligned and secured to prevent pre-loading of the bearings and premature bearing failure.
Where:OHL Overhung load (N or lbs)HP HorsepowerkW Transmitted KilowattD Pitch Diameter (inches or meters) of Sprocket, Gear, Sheave, Pulley, etc.n Maximum Shaft RPMK 1.00 Single Chain Drive; 1.25 Timing Belt Drive;
1.25 Spur or Helical Gear Drive; 1.50 V-Belt Drive; 2.50 Flat Belt Drive
126,000 x HP x KD x n
Imperial OHL (lbs) =
19,100 x kW x KD x n
Metric OHL (N) =
Overhung Load Calculations Use the following formula to determine actual overhung load for a given drive:
For a precise dimension on a specific motor, or for general assistance, we recommend you contact STOBER Technical Support.
d2 Motor Shaft Diameter (If an adapter bushing is required it will be supplied with the motor plate.)
b6 Pilot Diameter
e6 Bolt Circle Diameter
s6 Bolt Diameter
I5 Motor Shaft Length
f6 Pilot Length
a6 Square Flange (Optional – motor plate will typically be made to match this dimension.)
KSS Mounting Position OptionsWhen ordering, the mounting position (E12, E34, EL5 or EL6), MUST BE SPECIFIED
KSS Series: RIGHT ANGLE — Solid Shaft/Hollow Output
Permissible Output Shaft Load and Tilting Moments*V Solid Shaft Output 1) A, S, W Hollow Output 2)
UnitZ2
mm
F2AN
F2RN
M2KNm
Z2mm
F2AN
M2KNm
KSS1 40 1900 5000 360 40 1900 240
KSS2 42 2100 6000 430 42 2100 310
KSS3 45 2400 7000 525 45 2400 380* Refer to illustration and definitions below.1) For DOUBLE output shaft: F2R x 0.7 2) Values shown for “W” Style are for double bushings. For single bushings use value M2K x 0.5 and F2A x 0.53) Solid Shaft unit with a Flange – z2 value is 132mm/5.20”; F2R value is 64,000N/14,400 lbs.
Is
F
Permissible Motor Tilting TorqueThe permissible tilting torque of the motor attached to the gear unit is a result of the static and dynamic load “F” from the motor weight, mass acceleration, and vibration multiplied by the distance from the center of gravity “Is” of the motor.
M1KMS1R MS2R MS3R
Nm 25 60 125M1k = F × Is < M1K
The permissible load and tilting moment values are based on an output speed of 20 RPM. For higher speeds the following applies, where n2 is the desired speed:
The application input tilting moment should be determined by the following formula:
All formulas shown are based on METRIC valuesUpper case letters are permissible values. Lower case letters are for existing values.