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Pneumatic Spring Applied Wind Turbine Brakes


The New PFS200EP series with Extended Friction Pads

The New PFS200EP series with Extended Friction Pads

W.C. Branham brings spring applied caliper disc brakes from the factory floor to towering wind turbines.

Wind Turbine Friendly.

As part of over-speed protection, spring applied brakes have the ability to stop the wind turbine rotor in harsh conditions.

Pneumatic (PFS)

W.C. Branham Inc. has a wide breadth of pneumatic spring applied brakes. They include the PFS47, PFS200, PFS200UL, and PFS400 series' as well as the recently introduced PFS520 and PFS522 series'.

The PFS400 has 2 times the brake holding torque than that of the PFS200 series and 4 times than that of the PFS47. The PFS520 has 3.3 times and the PFS522 has 6.6 times the brake holding torque of the PFS400.

How do they work?

Active minimum pressure releases the brake piston (pulls the brake piston away) from the brake disc rotor and stores that energy in a Belleville disc spring stack. At pressure loss, the energy stored in the disc spring stack is emitted driving the brake piston and engaging the disc rotor for positive stopping.

Common Features.

  • Cast aluminum construction | Hardcoated housings | Non-asbestos friction material | Replaceable friction pads | Buna-N seals | Viton® seals optional | Float mount | Belleville disc spring stack
  • Standard models for brake disc thicknesses of 5/32, 1/4, 3/8,1/2, 5/8, 3/4, 1.0 and 1-1/8 inches.
  • We welcome custom brake disc thicknesses including metric.

Specifications

(click for more details)


Products Available

  Product # Name Description Additional Info Disc Thick.(in.) Tangential Force
4004-0222W PFS47AF Single Acting, Floating Mount. Use Fixed Disc Single Piston. Spring Applied 85 PSI Rel. 5/32 465 lbf, 2068 N
4004-0225W PFS47BF Single Acting, Floating Mount. Use Fixed Disc Single Piston. Spring Applied 85 PSI Rel. 1/4 465 lbf, 2068 N
4004-0226W PFS47LF Single Acting, Floating Mount. Use Fixed Disc Single Piston. Spring Applied 85 PSI Rel. 3/8 465 lbf, 2068 N
4004-0227W PFS47EF Single Acting, Floating Mount. Use Fixed Disc Single Piston. Spring Applied 85 PSI Rel. 1/2 465 lbf, 2068 N
4004-0231W PFS200AF Single Acting, Floating Mount. Use Fixed Disc Dual Pistons. Spring Applied 85 PSI Rel 5/32 929 lbf, 4132 N
4004-0232W PFS200BF Single Acting, Floating Mount. Use Fixed Disc Dual Pistons. Spring Applied 85 PSI Rel 1/4 929 lbf, 4132 N
4004-0233W PFS200LF Single Acting, Floating Mount. Use Fixed Disc Dual Pistons. Spring Applied 85 PSI Rel 3/8 929 lbf, 4132 N
4004-0234W PFS200EF Single Acting, Floating Mount. Use Fixed Disc Dual Pistons. Spring Applied 85 PSI Rel 1/2 929 lbf, 4132 N
4004-0256W PFS47TF Single Acting, Floating Mount. Use Fixed Disc Single Piston. Spring Applied 85 PSI Rel. 3/4 465 lbf, 2068 N
4004-0265W PFS200TF Single Acting, Floating Mount. Use Fixed Disc Dual Pistons. Spring Applied 85 PSI Rel 3/4 929 lbf, 4132 N
4004-0771W PFS400AF Single Acting, Floating Mount. Use Fixed Disc Dual Pistons. Spring Applied 100 PSI Rel. 5/32 1859 lbf, 8269 N
4004-0772W PFS400BF Single Acting, Floating Mount. Use Fixed Disc Dual Pistons. Spring Applied 100 PSI Rel. 1/4 1859 lbf, 8269 N
4004-0773W PFS400LF Single Acting, Floating Mount. Use Fixed Disc Dual Pistons. Spring Applied 100 PSI Rel. 3/8 1859 lbf, 8269 N
4004-0774W PFS400EF Single Acting, Floating Mount. Use Fixed Disc Dual Pistons. Spring Applied 100 PSI Rel. 1/2 1859 lbf, 8269 N
4004-0775W PFS400HF Single Acting, Floating Mount. Use Fixed Disc Dual Pistons. Spring Applied 100 PSI Rel. 5/8 1859 lbf, 8269 N
4004-0776W PFS400TF Single Acting, Floating Mount. Use Fixed Disc Dual Pistons. Spring Applied 100 PSI Rel. 3/4 1859 lbf, 8269 N
4004-0777W PFS400OF Single Acting, Floating Mount. Use Fixed Disc Dual Pistons. Spring Applied 100 PSI Rel. 1.0 1859 lbf, 8269 N
4004-0778W PFS400QF Single Acting, Floating Mount. Use Fixed Disc Dual Pistons. Spring Applied 100 PSI Rel. 1-1/8 1859 lbf, 8269 N
4005-0030W PFS200SAUL Single Acting, Floating Mount. Use Fixed Disc Dual Pistons. Spring Applied 85 PSI Rel 5/32 929 lbf, 4132 N
4005-0031W PFS200SBUL Single Acting, Floating Mount. Use Fixed Disc Dual Pistons. Spring Applied 85 PSI Rel 1/4 929 lbf, 4132 N
4005-0032W PFS200SLUL Single Acting, Floating Mount. Use Fixed Disc Dual Pistons. Spring Applied 85 PSI Rel 3/8 929 lbf, 4132 N
4005-0033W PFS200SEUL Single Acting, Floating Mount. Use Fixed Disc Dual Pistons. Spring Applied 85 PSI Rel 1/2 929 lbf, 4132 N
4005-0034W PFS200SJUL Single Acting, Floating Mount. Use Fixed Disc Dual Pistons. Spring Applied 85 PSI Rel 5/8 929 lbf, 4132 N
4005-0035W PFS200STUL Single Acting, Floating Mount. Use Fixed Disc Dual Pistons. Spring Applied 85 PSI Rel 3/4 929 lbf, 4132 N
4005-0036W PFS200SOUL Single Acting, Floating Mount. Use Fixed Disc Dual Pistons. Spring Applied 85 PSI Rel 1.0 929 lbf, 4132 N
4005-0037W PFS200SQUL Single Acting, Floating Mount. Use Fixed Disc Dual Pistons. Spring Applied 85 PSI Rel 1-1/8 929 lbf, 4132 N
NEW! 4005-0038W PFS200DAUL Double Acting, Fixed Mount. Use Fixed or Floating Disc Quad Pistons. Spring Applied 85 PSI Release Pressure 5/32 929 lbf, 4132 N
NEW! 4005-0039W PFS200DBUL Double Acting, Fixed Mount. Use Fixed or Floating Disc Quad Pistons. Spring Applied 85 PSI Release Pressure 1/4 929 lbf, 4132 N
NEW! 4005-0040W PFS200DLUL Double Acting, Fixed Mount. Use Fixed or Floating Disc Quad Pistons. Spring Applied 85 PSI Release Pressure 3/8 929 lbf, 4132 N
NEW! 4005-0041W PFS200DEUL Double Acting, Fixed Mount. Use Fixed or Floating Disc Quad Pistons. Spring Applied 85 PSI Release Pressure 1/2 929 lbf, 4132 N
NEW! 4005-0042W PFS200DJUL Double Acting, Fixed Mount. Use Fixed or Floating Disc Quad Pistons. Spring Applied 85 PSI Release Pressure 5/8 929 lbf, 4132 N
NEW! 4005-0043W PFS200DTUL Double Acting, Fixed Mount. Use Fixed or Floating Disc Quad Pistons. Spring Applied 85 PSI Release Pressure 3/4 929 lbf, 4132 N
NEW! 4005-0044W PFS200DOUL Double Acting, Fixed Mount. Use Fixed or Floating Disc Quad Pistons. Spring Applied 85 PSI Release Pressure 1/0 929 lbf, 4132 N
NEW! 4005-0045W PFS200DQUL Double Acting, Fixed Mount. Use Fixed or Floating Disc Quad Pistons. Spring Applied 85 PSI Release Pressure 1-1/8 929 lbf, 4132 N
NEW! 4005-0125W PFS400IF-EP Single Acting, Floating Mount. Use Fixed Disc Dual Pistons. Spring Applied 85 PSI Rel. 3/16 1859 lbf, 8269 N
NEW! 4005-0126W PFS400BF-EP Single Acting, Floating Mount. Use Fixed Disc Dual Pistons. Spring Applied 85 PSI Rel. 1/4 1859 lbf, 8269 N
NEW! 4005-0127W PFS400LF-EP Single Acting, Floating Mount. Use Fixed Disc Dual Pistons. Spring Applied 85 PSI Rel. 3/8 1859 lbf, 8269 N
NEW! 4005-0128W PFS400EF-EP Single Acting, Floating Mount. Use Fixed Disc Dual Pistons. Spring Applied 85 PSI Rel. 1/2 1859 lbf, 8269 N
NEW! 4005-0129W PFS400JF-EP Single Acting, Floating Mount. Use Fixed Disc Dual Pistons. Spring Applied 85 PSI Rel. 5/8 1859 lbf, 8269 N
NEW! 4005-0130W PFS400TF-EP Single Acting, Floating Mount. Use Fixed Disc Dual Pistons. Spring Applied 85 PSI Rel. 3/4 1859 lbf, 8269 N
NEW! 4005-0131W PFS400OF-EP Single Acting, Floating Mount. Use Fixed Disc Dual Pistons. Spring Applied 85 PSI Rel. 1.0 1859 lbf, 8269 N
NEW! 4005-0132W PFS400QF-EP Single Acting, Floating Mount. Use Fixed Disc Dual Pistons. Spring Applied 85 PSI Rel. 1-1/8 1859 lbf, 8269 N
NEW! 4005-0139W PFS200AF-EP Single Acting, Floating Mount. Use Fixed Disc Dual Pistons. Spring Applied 85 PSI Rel. 5/32 929 lbf, 4132 N
NEW! 4005-0140W PFS200IF-EP Single Acting, Floating Mount. Use Fixed Disc Dual Pistons. Spring Applied 85 PSI Rel. 3/16 929 lbf, 4132 N
NEW! 4005-0141W PFS200BF-EP Single Acting, Floating Mount. Use Fixed Disc Dual Pistons. Spring Applied 85 PSI Rel. 1/4 929 lbf, 4132 N
NEW! 4005-0142W PFS200LF-EP Single Acting, Floating Mount. Use Fixed Disc Dual Pistons. Spring Applied 85 PSI Rel. 3/8 929 lbf, 4132 N
NEW! 4005-0143W PFS200EF-EP Single Acting, Floating Mount. Use Fixed Disc Dual Pistons. Spring Applied 85 PSI Rel. 1/2 929 lbf, 4132 N
NEW! 4005-0144W PFS200JF-EP Single Acting, Floating Mount. Use Fixed Disc Dual Pistons. Spring Applied 85 PSI Rel. 5/8 929 lbf, 4132 N
NEW! 4005-0145W PFS200TF-EP Single Acting, Floating Mount. Use Fixed Disc Dual Pistons. Spring Applied 85 PSI Rel. 3/4 929 lbf, 4132 N
NEW! 4005-0146W PFS200OF-EP Single Acting, Floating Mount. Use Fixed Disc Dual Pistons. Spring Applied 85 PSI Rel. 1.0 929 lbf, 4132 N
NEW! 4005-0147W PFS200QF-EP Single Acting, Floating Mount. Use Fixed Disc Dual Pistons. Spring Applied 85 PSI Rel. 1-1/8 929 lbf, 4132 N
NEW! 4252-0080W PFS522SE Single Acting, Floating Mount. Use Fixed Disc Dual Pistons. Spring Applied 90 PSI Rel. 1/2 12236 lbf, 54428 N
NEW! 4252-0081W PFS522SJ Single Acting, Floating Mount. Use Fixed Disc Dual Pistons. Spring Applied 90 PSI Rel. 5/8 12236 lbf, 54428 N
NEW! 4252-0082W PFS522ST Single Acting, Floating Mount. Use Fixed Disc Dual Pistons. Spring Applied 90 PSI Rel. 3/4 12236 lbf, 54428 N
NEW! 4252-0083W PFS522SO Single Acting, Floating Mount. Use Fixed Disc Dual Pistons. Spring Applied 90 PSI Rel. 1.0 12236 lbf, 54428 N
NEW! 4252-0084W PFS522SQ Single Acting, Floating Mount. Use Fixed Disc Dual Pistons. Spring Applied 90 PSI Rel. 1-1/8 12236 lbf, 54428 N
NEW! 4252-0093W PFS520SE Single Acting, Floating Mount. Use Fixed Disc Dual Pistons. Spring Applied 75 PSI Rel. 1/2 6419 lbf, 28565 N
NEW! 4252-0094W PFS520SJ Single Acting, Floating Mount. Use Fixed Disc Dual Pistons. Spring Applied 75 PSI Rel. 5/8 6419 lbf, 28565 N
NEW! 4252-0095W PFS520ST Single Acting, Floating Mount. Use Fixed Disc Dual Pistons. Spring Applied 75 PSI Rel. 3/4 6419 lbf, 28565 N
NEW! 4252-0096W PFS520SO Single Acting, Floating Mount. Use Fixed Disc Dual Pistons. Spring Applied 75 PSI Rel. 1.0 6419 lbf, 28565 N
NEW! 4252-0097W PFS520SQ Single Acting, Floating Mount. Use Fixed Disc Dual Pistons. Spring Applied 75 PSI Rel. 1-1/8 6419 lbf, 28565 N
 
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