WCP-0200: Friction Brake (1/2” Hex)

Optional Parts to Buy

Assembly Prep

Refer back to the Complete Kits and Individual Components pages to ensure that all necessary parts are located before starting assembly steps.

Tools Required For Assembly

These tools are required for the assembly of the Friction Brake

• Allen Key Set

• Snap Ring Pliers

The following page will have all necessary information for the assembly of the Friction Brake.

Friction Brake (1/2" Hex) (KIT-0001)

Step 1

These will come pre-assembled. This step is used if you need to disassemble of change from the 1/2" hex cone to the 3/8" hex cone.

Step 2

Thread the brake cone onto rod of cylinder. The threads of the shoulder bolt are relatively short so Loctite is recommended to be used.

Step 3

The two #10-32 x 1.5”L bolts must be installed first due to the piston covering the heads of these bolts once the piston is mounted.

Common Questions

Q: What PSI should I run the piston at?

A: 60 PSI

Q: What stage can I put the brake on?

A: Any stage or position on the robot, but we recommend the first stage or the closest to the motor as possible. The results will be much better.

Q: What is the holding force of the brake?

A: The WCP Friction Brake with the WCP Brake Pad can support 1.5 ft lbs by itself at 60 PSI. The max/min that we have recorded in testing has been 1-2 ft lbs. These values are recorded at the brake and without a motor attached. Adding a motor in brake mode will increase these values.

Common Issues

Issue: Brake does not disengage.

Possible Solutions:

• Check that the shoulder bolt attaching the cone to the piston is threaded all the way in.

• Check the air pressure for the piston. If it is too low, the piston will struggle to disengage.

The WCP Friction can be mounted in a variety of ways. The two most popular mounting applications that we have seen are for the WCP Rotation SS Gearbox and the WCP Bearing Block.

Purchasing the Friction Brake has been simplified to buying a "Complete Kit" or "Individual Components".

The "Complete Kits" will have all the necessary parts to assemble the Frictions Brake minus motors.

"Individual Components" is an option for teams if:

• They already have some of the parts on hand, such as gears, bearings, or raw material

• Want to purchase spare parts

• Upgrading from one version to another version

How does the WCP Friction Brake Work?

The Brake Cone Assembly is attached to the pneumatic piston via a shoulder bolt passing through a captured bearing. This captured bearing allows the Brake Cone to freely spin when the piston is retracted. The Brake Cone is then connect to an extended shaft from a gearbox or the 8mm SplineXS adapter to connect directly to the Kraken X60 motor. When the cylinder extends, the Brake Cone is pressed into the Brake Pad attached to the gearbox plate. The friction between the Brake Pad and the Brake Cone cause the braking for the gearbox.

Holding Torque

The following values were found using the WCP Friction Brake, unmodified, and with the WCP Friction Brake Pad. The pneumatic cylinder was run at 60 psi.

Holding Torque

• Nominal - 1.5 ft-lbs

• Min - 1 ft-lbs

• Max - 2 ft-lbs

The WCP Friction Brake is designed to solve the issue of holding a system in place when there is no or little power applied. This can be useful for teams with limited controls experience or just want to hold their robot in place at the end of the match.

Notable Features:

• Easy integration with your design

• 1.875" and 2" bolt pattern compatibility

• Compatible with the Rotation SS Gearbox and WCP Bearing Block

The WCP Rotation SS Gearbox and the WCP Friction Brake are a perfect combo for teams that want to control an arm or similar mechanism.

Refer back to our for more information and detailed assembly instructions.

Manual Updates

Product Updates

The new WCP Bearing Block and WCP Friction Brake are compatible, making them a perfect combo for teams that are using the versatile WestCoast Drivetrain.