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DB3604 GMR Mk 2 and GMR40 Mk 2 - Disc Brake Caliper

DB3604 GMR Mk 2 and GMR40 Mk 2 - Disc Brake Caliper
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DB3604 GMR Mk 2 and GMR40 Mk 2 - Disc Brake Caliper

Product catalog summary
General Description: The GMR Mk 2 and GMR40 Mk 2 are disc brake calipers designed for use with various interchangeable thrusters, including pneumatic, hydraulic, and mechanical types. The calipers are typically used in pairs and can be mounted on horizontal or inclined surfaces with appropriate kits.
Specifications: The GMR caliper is compatible with 25mm thick discs, while the GMR40 is for 38-40mm thick discs. The minimum disc diameter is 610mm, with no upper limit. The calipers are made from spheroidal graphite cast iron, with alternatives available.
Components and Assembly: Key components include pivot bases, arms, pressure plates, and friction pads. The calipers are supplied as right-handed assemblies unless specified otherwise. Detailed part numbers and quantities are provided for assembly.
Installation and Maintenance: Installation requires clearance for differential expansion between the disc and hub. Maintenance involves regular greasing of the caliper arm and pivot pins, with specific procedures for extended use. Replacement of friction pads is necessary from the rear of the caliper.
Controllers and Safety: Twiflex offers standard controllers for various signalling systems. Only Twiflex asbestos-free brake pads should be used to maintain warranty validity. Health and safety data are referenced in DS 0500.
Additional Notes: The document includes a note on the potential for design modifications by Twiflex Limited and emphasizes the intellectual property rights of the content.
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Catalog excerpts

DB3604 GMR Mk 2 and GMR40 Mk 2 - Disc Brake Caliper-1

DB3604 GMR Mk 2 and GMR40 Mk 2 - Disc Brake Caliper Nominal dimensions given. For specific dimensions please contact Twiflex Limited. Position of a typical thruster Brake Disc 3 Holes Ø 17 For M16 Mounting Bolts Total Pad Area 408 cm2 Weight of Caliper 34kg. Disc Center Line Note: The caliper may be assembled as drawn (right hand assembly) or with arms and thruster oppositely handed. GMR Caliper Assembly Part Number 6780971 - GMR40 Caliper Assembly Part Number 6781006 Item Description 1 Pivot Base (GMR) 1 Pivot Base (GMR40) 2 Arm (Thruster Side) 3 Arm (Opposite Side) 4 Mills Pin 5 Pressure Plate 6 Retaining Disc 7 MS x 16 CSK. Screw 8 Pivot Pin 9 Spring Ring 10 Circlip Description Spring Clip Keep Plate M8 x 45 Bolt (GMR) M8 x 55 Bolt (GMR40) M8 Nut Tension Spring Grease Nipple ‘O’ Ring ‘O’ Ring - Pad Assembly

 Open the catalog to page 1
DB3604 GMR Mk 2 and GMR40 Mk 2 - Disc Brake Caliper-2

GMR Mk 2 and GMR40 Mk 2 DISC BRAKE CALIPER General Description The basic GMR caliper accepts a number of interchangeable thrusters: pneumatic, hydraulic and mechanical. Shown, in the drawing is a caliper operated by a pneumatic thruster-type P. Marine version calipers are available. The following complete brake calipers are available, plus the equivalent GMR40 types (Data Sheet Nos. in brackets): Pneumatic GMR-P Air applied, spring released (DB 3606) Hydraulic GMR-H Hyraulic applied, spring released (DB3605) Mechanical GMR-SH Spring applied, hydraulically released (DB4605) GMR-S Spring applied,...

 Open the catalog to page 2

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