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DB4603 GMR-S and GMR40-S Disc Brake Caliper - Spring Applied, Air Released

DB4603 GMR-S and GMR40-S Disc Brake Caliper - Spring Applied, Air Released
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DB4603 GMR-S and GMR40-S Disc Brake Caliper - Spring Applied, Air Released - 1

DB4603 GMR-S and GMR40-S Disc Brake Caliper - Spring Applied, Air Released 270 New Pads 300 Fully Worn Pads 40 To Edge of Disc 170 Mounting Hole CRS Disc Centre Line Nominal dimensions given. For specific dimensions please contact Twiflex Limited. For GMR Mk 2 caliper details see DB 3604 Note: The caliper may be assembled as drawn (right hand assembly) or with arms and thruster oppositely handed. Minimum Pressure for Full Retraction 8·4 bar Maximum Pressure 9 bar The ratings shown on the above graph are based on fully bedded and conditioned brake pads. For bedding in and conditioning procedures see Publication M1060. Braking Force is defined as the Tangential Force acting on the brake disc at the Effective Disc Radius. Braking Torque (Nm) = Braking Force (N) x Effective Disc Radius (m) where Effective Disc Radius = Actual Disc Radius- 0.06

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GMR-S and GMR40-S Disc Brake Caliper - Spring Applied, Air Released 27 76 Fully Retracted 156 Fully Extended Component Part No. Front Cap Rear Cap Thrust Collar Stud M16 Nut M16 Spring Washer Wiper Seal 600242 Pushrod Rod Seal 600243 Sleeve Spring Plate ‘O’ Ring 600138 ‘O’ Ring 600224 Circlip Diaphragm 7200776 Support Plate

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DB4603 GMR-S and GMR40-S Disc Brake Caliper - Spring Applied, Air Released - 3

The GMR-S and GMR40--S calipers are available in various ratings, as shown on the performance charts. Part numbers are given below. These are typical performance figures for bedded and conditioned brake pads having a friction coefficient of 0.4 when used with standard Twitlex discs an appropriate ‘service factor’ should be applied when designing the braking system and in the case of brakes used for holding duties or in wet conditions this should be not less than 2.0. Marinised versions of the calipers, and thrusters with nodular cast iron castings (instead of aluminium alloy) are available...

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DB4603 GMR-S and GMR40-S Disc Brake Caliper - Spring Applied, Air Released - 4

GMR-S and GMR40-S Disc Brake Caliper - Spring Applied, Air Released N.B. Keep fingers clear of the space between push rod and caliper arm at all times. If an inclined mounting kit is fitted, the stop screw should be re-adjusted to maintain equal pad clearance on either side of the disc. 2.5 Pad wear can be monitored by observing the gap between the lugs on the pads pressure plates and the machined surfaces on the caliper frame, when the brake is applied. Pads must be replaced {see 3.2) before the gap is reduced to zero. The maximum allowable wear on a pad is 10mm). 3. Maintenance CALIPER...

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DB4603 GMR-S and GMR40-S Disc Brake Caliper - Spring Applied, Air Released - 5

GMR-S and GMR40-S Disc Brake Caliper - Spring Applied, Air Released 3.7 Leakage of air past the rod seal may be caused by damage to the seal or to the pushrod. The surface of the pushrod must be smooth and free from scoring or bruising. Note that the pushrod cannot be removed whilst the thruster is dismantled. (For removal and replacement of the push rod see 3.11 below). The rod seal (which has two parts, the P.T.F.E. sealing ring and an 0-ring) may be removed using a small screwdriver or similar tool. Take care not to damage the groove. Once removed the seal should not be re-used. When...

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DB4603 GMR-S and GMR40-S Disc Brake Caliper - Spring Applied, Air Released - 6

Disc Diameter mm 610 760 915 1830 GMR-S and GMR40-S Disc Brake Caliper -1065 1220 Applied, Air Released Spring 1370 1525 0 0 1 Air Pressure - bar - bar Air Pressure Air Pressure - bar 1 2 3 Minimum Pressure for Full Retraction 7 bar Maximum Pressure 9 bar Minimum Pressure for Full Retraction 7 bar Maximum Pressure 9 bar Minimum Pressure for Full Retraction 7 bar Maximum Pressure 9 bar 12 14 16 18 20 22 Brake performance at 30 kN braking force Disc Diameter mm Air Pressure - bar - bar Air Pressure Air Pressure - bar Minimum Pressure for Full Retraction 6 bar Maximum Pressure 7 bar Minimum...

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