A – Stain less Ste el Flexible Membranes B – Ov erload Collars C – Ca rtridg e T ransm issi on Un it D – Ant i-Fly Fea ture E – An ti-Cor rosion T reatm e nt F – Hu bs w ith Puller Holes G – Robust Hub Bolts D B A E Excellent power-to-weight ratio. High misalignme nt capability. Low imposed forces on machinery leading to: — Reduced ma chinery vibration — Maximized bearing life Stainless steel flexible membranes for maximum life. Cartridge transmission unit eases assembly and gives repeata ble balance. Overload collars are fitted to protect the flexible membranes in case of a more severe torsional overload. Anti-fly retention of the spacer in the unlikely event of membrane failure. J acking bol t fe a t ure fo r easy in st alla ti on and re moval of spacer assembly available. Puller holes incorporated into hubs as standard. Design Features TSKProduct Description Metastream ®T Series Couplings, pioneered by John Crane Flexibox ®, incor porate a scalloped, stainless steel, flexible mem brane design . This d esign giv es the most flexible solution for high torque and misalignment. Easy to fit. Meets API 610 8th edition. Can be supplied to meet API 671. Intrinsic balance meets AGMA class 9. Ideally suited for electric motors and turbine drives in critical process industry, marine, and power generation applications. TSKT Series Couplings C F G
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Low imposed forces on machinery leading to: — Reduced machinery vibration — Maximized bearing life
Stainless steel flexible membranes for maximum life.
Cartridge transmission unit eases assembly and givesrepeatable balance.
Overload collars are fitted to protect the flexiblemembranes in case of a more severe torsional
overload. Anti-fly retention of the spacer in the unlikely event of
membrane failure.
J acking bolt feature for easy installation and removalof spacer assembly available.
Puller holes incorporated into hubs as standard.
Design Features
T SK
Product Descript ion
Metastream ® T Series Couplings, pioneered by JohnCrane Flexibox ® , incorporate a scalloped, stainlesssteel, flexible mem brane design. This design gives themost flexible solution for high torque and misalignment.
Easy to fit.
Meets API 610 8th edition. Can be supplied to meetAPI 671.
Intrinsic balance meets AGMA class 9.
Ideally suited for electric motors and turbine drives incritical process industry, marine, and power generation
Suggested service factors for electric motor, steam turbine, and
gas turbine drivers are given below.
*Use a minimum service factor of 1.25 on electric motor drivesthrough a gearbox.
The examples given are for typical machines and are empiricallybased guidelines. Knowledge of actual torque characteristics may
indicate a different service factor. For example, variable-speed electricmotors may exhibit a fluctuating torque characteristic. Consult J ohnCrane for advice.
1. Select appropriate service factor SF.
2. Calculate coupling rating R from
R =kW x 1000 x SFN
where:kW =driver rated powerN =speed (rev./min.)
3. Select a coupling with the same or higher rating.
4. Check that the hub bore capacity is suitable.
5. Check peak torque capability is suitable for application.
6. Check speed capability.
7. Check whether additional dynamic balancing is required.
8. Specify Distance Between Shaft Ends (DBSE).
Example: 150 kW electric motor to centrifugal
pump at 2960 rpmR =150 x 1000 x 1
2960
R =50.7 kW per 1000 rpm
Selection: TSK - 0075
Standard hub bore up to 65 mm.
Large hub bore up to 90 mm.Peak torque capability - 1790 Nm
Additional dynamic balancing should not be required.
A Windows® based computer selection program for the TSK isavailable. This selection program provides all necessary technical
data, inertias, torsional stiffness, etc. Contact J ohn Crane.
Avai lab le Opt ions
Spark-resistant couplings for hazardous zone operation.
Special materials for low temperature applications and/or
higher corrosion resistance.
Electrical insulation.
Torque limiting and shear pin designs.
Consult J ohn Crane for any other special requirements.
Metastream couplings can be adapted to suit virtually all power
For your nearest J ohn Crane fac ility, please co ntact o ne of the locations ab ove.
If the products featured will be used in a potentially da ngerous and /or haza rdous process, your John Crane representative should be consulted prior to their selection and use. In theinterest of co ntinuous development, J ohn Crane Compa nies reserve the right to alter designs a nd s pecifica tions without prior notice.
The inherent balance of the TSK range meets AGMA standard9000-C90 class 9. The adjacent chart relates the TSK sizes tooperating speeds on the basis of this AGMA class 9 characteristicto provide a general guide to determine if dynamic balance
improvement is necessary.
When balancing improvement is requested, J ohn Crane willdynamically balance the transmission unit. Hubs may also be
dynamically balanced, and this will usually be carried out aftermachining the bore but before cutting single keyways.
Correct installation and alignment of couplings is essential for
reliable machinery performance.
J ohn Crane supplies a variety of shaft alignment equipment andoffers alignment training courses.
NOTES: * Meets NEMA end float specification without modification.
** Values based on angular deflection of 1/2o per end and minimumDBSE. Greater misalignment accommodation is possible byincreasing dimension C.
The angular and axial restoring forces in the table below left are given
at maximum deflections. The chart can be used to determine forces
across the full deflection range. The nonlinear characteristics candetune a system to prevent high amplitude axial vibration.
Operating Speed (in thousand rpm)
Coupling Size
C l a s s 9
1 3 5 7 159 302 4 6 108 20
BalanceImprovementNot Generally
Required
BalanceImprovement
M ay Be Required
1400
0930
0740
0350
0230
0135
0075
0033
0013
0500
TSK MISALIGNMENT
M ax. Axial M ax. ParallelM isalignment * M isalignment * *
Coupling Equivalent RestoringSize +/– mm. Thrust kN mm. M oment Nm