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R&D Drive Plate (10 Teeth Spline, PRM ZF Hurth, 155.45mm OD, 60 lb ft)

Part No. RND-22A4

£71.96 You pay £71.96 Incl VAT You pay £59.97 Excl VAT

RRP £77.80 £64.83

Save £5.84 (7.5%) Save £4.86 (7.5%)


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Brand R&D Marine
Country of Origin United Kingdom
Element Loop
Gearbox Model Borgwarner 500, PRM 80, PRM 90, PRM 120, PRM 125, PRM 500, TMC 30, TMC 40, TMC 50, TMC 60, ZF 10, ZF 12, ZF Hurth HBW 5, ZF Hurth HBW 10, ZF Hurth HBW 15, ZF Hurth HBW 50, ZF Hurth HBW 125
Suitability PRM 80, 90, 120, 125 & 500 gearbox, ZF 10 & 12 gearbox, Hurth HBW 5, 10, 15, 50 & 125 gearboxes, Technodrive TMC 30, 40, 50 & 60 gearboxes & Borgwarner 500.
Gearbox Spline 10 teeth B10 x 23 x 29 DIN 5464 (29mm diameter)
Diameter OD: 155.45mm (6.125")
Torque 80 Nm, 60 lbft
Bolt Hole PCD (Pitch Circle Diameter) 5 x 6.35mm holes (0.25") on 142mm PCD (5.593).
Number of Fixing Holes 5
Thickness Maximum: 32mm (1.25")

22A4 Boat Engine Damper Drive Plate from R&D Marine

Fitted between the boat engine and the gearbox input shaft, a damper drive plate is designed to transmit the engine power to the gearbox, whilst reducing transmitted gear noise and providing a cushioned drive when selecting gear. All R and D Damper Drive plates include a 'failsafe' design.

Also called the Driven Plate, Damper Plate or Clutch Plate, the 22A4 Damper Drive Plate is from the R and D Loop element range. Common applications for the 22A4 drive plate include small marine engines which have a flywheel with the 6.125" diameter fixings aperture.

The technical details:
Spline: 10 teeth B10 x 23 x 29 DIN 5464 (29mm diameter) for PRM 80, 120 & 150 gearboxes, Hurth ZF & HBW, Technodrive TMC 30 & 40 gearboxes and the Borgwarner 500.
Diameter of drive plate back plate which bolts to the engine flywheel: 155.45 mm 6.125"
Back plate fixing holes: The small back plate has 5 x 6.35mm holes (0.25") on 142mm PCD (5.593). This was a very common fixing arrangement for BMC, Leyland, Thornycroft and Perkins engines
Drive plate maximum thickness: 32mm (1.25")
Fitted with a type A loop element for 80Nm 60 ft lb torque, which can be mounted either round on the flywheel and rotated in either direction. This drive plate element will provide linear stiffness up to 3 degrees of deflection and is failsafe

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