Air Set Brakes


Shaft Mounted Air Engaged Friction Brakes

Operation
  • Industrial friction brake engages with air pressure, release springs disengage friction brake when air is exhausted
  • Torque is linear in response to air pressure applied
Mounting
  • Flange bolts to machine frame or other fixture, shaft inserts into bore and is fixed with set screws and customer supplied key
  • Industrial friction brake can also be mounted mid-shaft
  • Friction brakes are designed for horizontal mounting. If vertical mounting is required, consult engineering for options
Applications
  • Air set industrial friction brakes are suitable for Stopping, Holding and Cycling applications
  • Maximum RPM varies by model. Please consult the detail sheets (below). Consult engineering if the intended application exceeds the listed maximum RPM.
Design Features
  • Air set friction brakes are bored to suit up to the maximum shown (US & Metric) for easy installation.
  • Drilled & slotted flange to accommodate various installation arrangements
  • Available with either high or low* coefficient friction linings for same price
Air Set Brakes
Friction Brake Repair Kits & Parts
Click here or view PDF detail sheets
below for more information.

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Product No. Friction Lining Coefficient Torque @ 80 PSI (Lb-In) Maximum Bore with Standard Keyway
(Inches / Millimeters)
Length (Inches) Outside Diameter (Inches) Mounting Bolt Circle (Inches) Detail Sheet Request 3D CAD Model
B3F2R-STH High 267 1.000 / 24 2.60 4.25 3.875 View PDF request
B3F2R-STL Low* 178 1.000 / 24 2.60 4.25 3.875 View PDF request
B4F2R-STH High 760 1.250 / 31 3.13 5.38 4.938 View PDF request
B4F2R-STL Low* 507 1.250 / 31 3.13 5.38 4.938 View PDF request
B5F2R-STH High 1584 1.438 / 38 3.34 6.75 6.250 View PDF request
B5F2R-STL Low* 1056 1.438 / 38 3.34 6.75 6.250 View PDF request
B6F2G-STH High 3118 2.000 / 52 4.48 8.56 7.937 View PDF request
B6F2G-STL Low* 2079 2.000 / 52 4.48 8.56 7.937 View PDF request
B8F2K-STH High 4788 2.375 / 66 4.71 11.31 10.687 View PDF request
B8F2K-STL Low* 3192 2.375 / 66 4.71 11.31 10.687 View PDF request
BAF2K-STH High 9673 2.750 / 72 5.23 13.63 12.812 View PDF request
BAF2K-STL Low* 6449 2.750 / 72 5.23 13.63 12.812 View PDF request

*Low coefficient lining models are offered for applications where a small amount of slip is required or a narrower torque range is necessary. For continuous slip or tension control applications, a SensiFlex® brake should be used.

Additional Information

Mach III industrial friction brake models are solidly constructed and feature hang-up resistant drives to provide reliable braking and holding. Mach III air set industrial friction brakes can be adapted to accommodate customer needs. See our Custom Design Solutions page for more information. Mach III encourages contact with our engineering department before purchasing an industrial friction brake for use in a new or retrofit application.

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