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R&D Drive Plate | 18 Teeth Spline | PRM 601 & 1000 | 352.5mm Diameter

Part No. RND-21R5

£164.23 You pay £164.23 Incl VAT You pay £136.86 Excl VAT

RRP £177.55 £147.96

Save £13.32 (7.5%) Save £11.10 (7.5%)


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Brand R&D Marine
Country of Origin United Kingdom
Element Hammer Head
Gearbox Model PRM 601, PRM 602, PRM 1000
Suitability PRM Gearboxes: 601, 602 & 1000.
Gearbox Spline 18 teeth 12/24 DP (40.5mm diameter)
Diameter OD: 352.5mm (13.875")
Torque 745 Nm, 550 lbft
Bolt Hole PCD (Pitch Circle Diameter) 8 x 10.6mm on 333.4mm.
Number of Fixing Holes 8
Thickness Maximum: 38.1mm (1.50")

21R5 R & D Marine Damper Drive Plate

Fitted between the 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 21R5 Damper Drive Plate is from the R and D hammer head element range. Common applications for the 21R5 drive plate includes engines fitted with the PRM 601 or PRM 1000 gearboxes, SAE 11½

The technical details:
Spline: 18 teeth 12/24 DP spline (40.5mm diameter) for PRM 601 and PRM 1000 gearboxes
Diameter of back plate which bolts to the engine flywheel: 352.5mm 13.875" SAE 11.5
Back plate fixing holes: 8 x 10.6mm on 333.4mm SAE11-1/2
Drive plate maximum thickness: 38.1mm (1.50")
Fitted with the multi-directional 'L' Hammer Head element for 745 Nm 550 ftlb torque, providing a smaller element diameter which is more torsionally flexible than the loop type elements and provides three stage stiffness with up to 9 degrees of deflection. These damper drive plates are also fail safe.

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