M Series
Manufacturer: John Crane
Diaphragm Membrane Coupling with Stainless Steel Discs in Factory assembled Packs
M Series coupling range is particularly suited for electric motor and turbine drives in the oil and gas industry. Torque is normally transmitted through two sets of pre assembled membrane units, separated by a spacer element. The coupling provides a good level of angular, lateral and axial misalignment, while maintaining a high level of balance integrity. In the unlikely event of membrane failure, due to a torque overload, the coupling will disconnect the drive, thus protecting the associated shafts. Standard options for spark resistance are available.
• Meets ATEX 95, API 610, and can be supplied to meet API 671.
• Intrinsic balance meets AGMA class 9.
• High misalignment capability.
• Stainless steel flexible membranes for maximum life.
• Excellent power to weight ratio.
• Cartridge membrane design reduces stock inventory.
• The replaceable membrane units can be fitted to any length spacer to maximize the use of inventory held.
• Low imposed forces on machinery leading to a reduced machinery vibration and maximized bearing life.
• A bearing is fitted between the guard rings; in the very unlikely event of membrane failure, the spacer will freely rotate, giving no flow indication on the pump permitting the operators to shut down the machinery safely.
• Anti fly pretention of the spacer in the unlikely event of membrane failure.
• Standard API puller holds incorporated into hubs.
MAXIMUM SHAFT12"/300mm
MAXIMUM TORQUE95,500 Nm (845,000 lbf/in)
SPEED LIMITS24,000 rpm
TEMPERATURE LIMITS5°F to 300°F/ 15°C to 150°C