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Howdon Power Transmission LtdHowdon Power Transmission

Paganhill Lane, Cainscross, Stroud, United Kingdom

E: sales@howdon.co.uk  T: 01453 750814

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Torque Limiters Manufacturer | Howdon Power Transmission Ltd

Registered in England: Company No: 1316321 VAT No: GB 298 4367 03

Registered Office: Chargrove House, Shurdington Road, Shurdington, Cheltenham, Glos GL51 4GA

PRODUCT DATA SHEETS:

The Twiflex MU series of disc brake calipers is the smallest in the Twiflex range and is primarily intended for light stopping and holding duties. Its design permits left or right-handed assembly.

The caliper is suitable for use with a disc thickness of 8mm, however, with a revised thruster mounting arrangement, may be used with discs 12.7mm thick. Minimum disc diameter is 150mm. A range of brake discs is available from Howdon (see Disc and Hub Assemblies).

Fixing bolt to be supplied by the customer.

For pneumatic operation use dry, filtered and non-lubricated compressed air. Pneumatic brakes require a control valve, operated either manually or by pneumatic or electrical signal.

The ratings shown on the graphs are based on fully bedded in and conditioned brake pads with a nominal friction coefficient μ = 0.4. Howdon disc brakes must be used with Twiflex asbestos free brake pads.

Effective disc radius = actual radius (m) – 0.02m.

DIN Data Sheet

The Twiflex MS series of disc brake calipers is suitable for use with a disc thickness of 12.7mm. Minimum disc diameter is 250mm.

Normally one or two calipers are used per disc, mounted horizontally (i.e. at the 3 o’clock or 9 o’clock position) to prevent rubbing of one brake pad due to self-weight of the thruster. A range of brake discs is available from Howdon (see Disc and Hub Assemblies).

For pneumatic operation use dry, filtered and non-lubricated compressed air. Pneumatic brakes require a control valve, operated either manually or by pneumatic or electrical signal.

The ratings shown on the graphs are based on fully bedded in and conditioned brake pads with a nominal friction coefficient μ = 0.4. Howdon disc brakes must be used with Twiflex asbestos free brake pads.

Effective disc radius = actual radius (m) – 0.03m.

DIN Data Sheet

MU - Disc Brake CaliperMU - Disc Brake Caliper

MS - Disc Brake Caliper

MSA - Pneumatically Applied – Spring Released

MSD - Pneumatically Applied – Spring Released

MSE - Pneumatically Applied – Spring Released

MSG - Pneumatically Applied – Spring Released

MSF - Mechanically Applied - Lever Operated

MSH - Mechanically Applied - Hand Operated

MSK - Spring Applied - Pneumatically Released, Self Adjusting

MSL - Spring Applied - Pneumatically Released, Self Adjusting

DIN Data Sheet DIN Data Sheet DIN Data Sheet DIN Data Sheet DIN Data Sheet DIN Data Sheet DIN Data Sheet DIN Data Sheet

MU Caliper

MS Caliper

The Twiflex MR series of disc brake calipers is suitable for use with discs of 12.7mm or 25.4mm thick. Minimum disc diameter is 250mm. Minimum disc diameter for the MR2 is 460mm.

Normally one or two calipers are used per disc, but the number may be increased depending on disc size. The brakes may be positioned at any angle around the periphery of the disc, but should ideally be mounted horizontally (i.e. at the 3 o’clock or 9 o’clock position). If the caliper mounting angle is greater than 10° from the horizontal, or on vertical shaft applications, it should be fitted with an equalising link. A range of brake discs is available from Howdon (see Disc and Hub Assemblies).

For pneumatic operation use dry, filtered and non-lubricated compressed air. Pneumatic brakes require a control valve, operated either manually or by pneumatic or electrical signal.

The ratings shown on the graphs are based on fully bedded in and conditioned brake pads with a nominal friction coefficient μ = 0.4. Howdon disc brakes must be used with Twiflex asbestos free brake pads.

Effective disc radius = actual radius (m) – 0.03m.

DIN Data Sheet

MR - Disc Brake Caliper

MRA - Pneumatically Applied – Spring Released

MRD - Pneumatically Applied – Spring Released

MRE - Pneumatically Applied – Spring Released

MRG - Pneumatically Applied – Spring Released

MRH - Mechanically Applied - Lever Operated

MRW - Mechanically Applied - Hand Operated

MRK - Spring Applied - Pneumatically Released, Self Adjusting

MRL - Spring Applied - Hydraulically Released, Self Adjusting

DIN Data Sheet DIN Data Sheet DIN Data Sheet DIN Data Sheet DIN Data Sheet DIN Data Sheet DIN Data Sheet DIN Data Sheet

MR Caliper

The Twiflex MX13, MX25, MX30 and MX40 series of disc brake calipers is suitable for use with discs of 12.7mm, 25.4mm, 30mm and 40mm thick respectively. The SMX caliper is only suitable for use with discs 12.7mm thick. Minimum disc diameter is 300mm.

The MX/SMX calipers may be used with any of the Twiflex series of thrusters and feature a patented link mechanism to ensure uniform pad wear.

Normally one or two calipers are used per disc, but the number may be increased depending on disc size. The brakes may be positioned at any angle around the periphery of the disc, but should ideally be mounted horizontally (i.e. at the 3 o’clock or 9 o’clock position). If the caliper mounting angle is greater than 10° from the horizontal, or on vertical shaft applications, it should be fitted with an inclined mounting kit or equalizing link. A range of brake discs is available from Howdon (see Disc and Hub Assemblies).

For pneumatic operation use dry, filtered and non-lubricated compressed air. Pneumatic brakes require a control valve, operated either manually or by pneumatic or electrical signal.

The ratings shown on the graphs are based on fully bedded in and conditioned brake pads with a nominal friction coefficient μ = 0.4. Howdon disc brakes must be used with Twiflex asbestos free brake pads.

Effective disc radius = actual radius (m) – 0.033m.



DIN Data Sheet

MX 13, 25, 30 & 40 Disc Brake Caliper

MXA - Pneumatically Applied – Spring Released

MXB - Pneumatically Applied – Spring Released

MXD - Pneumatically Applied – Spring Released

MXE - Pneumatically Applied – Spring Released

MXG - Pneumatically Applied – Spring Released

MXH - Mechanically Applied - Hand Operated

MXW - Mechanically Applied - Hand Operated


DIN Data Sheet DIN Data Sheet DIN Data Sheet DIN Data Sheet DIN Data Sheet DIN Data Sheet DIN Data Sheet

MX Caliper

The Twiflex GMR and GMR40 series of disc brake calipers is suitable for use with discs of 25.4mm, and 40mm thick respectively. Minimum disc diameter is 610mm.

Normally one or two calipers are used per disc, but the number may be increased depending on disc size. The brakes may be positioned at any angle around the periphery of the disc, but should ideally be mounted horizontally (i.e. at the 3 o’clock or 9 o’clock position). If the caliper mounting angle is greater than 10° from the horizontal, or on vertical shaft applications, it should be fitted with an inclined mounting kit. A range of brake discs is available from Howdon (see Disc and Hub Assemblies).

For pneumatic operation use dry, filtered and non-lubricated compressed air. Pneumatic brakes require a control valve, operated either manually or by pneumatic or electrical signal.

The ratings shown on the graphs are based on fully bedded in and conditioned brake pads with a nominal friction coefficient μ = 0.4. Howdon disc brakes must be used with Twiflex asbestos free brake pads.

Effective disc radius = actual radius (m) – 0.06m.



DIN Data Sheet

GMR Mk2 & GMR40 Mk2 - Disc Brake Caliper

GMR-H and GMR40-H - Disc Brake Caliper, Hydraulically Applied, Spring Released

GMR-P and GMR40-P Disc Brake - Air Applied, Spring Released

GMRW Disc Brake Caliper Mechanically Applied, Hand Operated



DIN Data Sheet DIN Data Sheet DIN Data Sheet

GMR Caliper

The Twiflex T2 disc brake caliper is split caliper design suitable for use with a minimum disc thickness of 5mm. The modules are mounted each side of a central mounting plate of the same thickness as the brake disc. Minimum disc diameter is 120mm. Alternatively, the brake may be side-mounted with a spacer equal to the disc thickness between the two halves.

For pneumatic operation, use dry and filtered compressed air. Pneumatic brakes require a control valve, operated either manually or by pneumatic or electrical signal.

Normally one or two calipers are used per disc, but the number may be increased depending on disc size. The brakes may be positioned at any angle around the periphery of the disc, but should ideally be mounted horizontally (i.e. at the 3 o’clock or 9 o’clock position). A range of brake discs is available from Howdon (see Disc and Hub Assemblies).

The ratings shown on the graph are based on fully bedded in and conditioned brake pads with a nominal friction coefficient μ = 0.4. Howdon disc brakes must be used with Twiflex asbestos free brake pads.

Effective disc radius = actual radius (m) – 0.019m.



DIN Data Sheet

T2 - Pneumatically or Hydraulically Applied



T2 Caliper

The Layrub range is a long established but still unique design based on a range of twelve standard blocks. It is generally used to cover the low to medium power ranges up to torque ratings of 64 kNm. The blocks can be used in parallel leading to compactness and making the coupling suitable for high speed operation or in series to provide a torsionally soft coupling and to accommodate large mis-alignments.

Advantages of layrub couplings

A particular advantage of the Layrub product is the ability it provides to engineer a coupling to suit the application. As well as being able to call upon a large range of standard couplings we are able to arrange the standard blocks into customised design and to tailor the characteristics to suit the application.

The large volume of the rubber blocks gives these couplings a relatively low torsional stiffness and good damping characteristics. This makes the Layrub particularly suitable for the control of torsional vibration.

DIN Data Sheet

Layrub Couplings



Layrub Couplings