Our Stub Roller System provides a highly modular platform for teams to create a variety of rollers. Constructed from high-strength aluminum, this system delivers a lightweight yet robust solution for your robot. The stub design allows for easy roller installation and removal by using the stub wrench and the included mounting bolt. We offer pulley end hubs, SplineXL end hubs, and regular end hubs, enabling you to utilize belts and gears for powered rollers, or configure them as idler rollers as needed.

Notable Features

• Lock nut built into the end of each shaft

• Flats on shafts allow for easier roller removal

• Internal snapring grooves on hubs

• 1-3/4", 2-1/4", 2-3/4" stub shaft lengths

• Pulley end hubs, SplineXL end hubs, and regular end hubs available

Assembly Prep

Refer back to the Individual Components page 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 WCP Stub Rollers

• Snap Ring Pliers (For 1/2" Snap Rings)

• Allen Keys

  • 1/8"

Assembly Instructions

The following sections will cover the basic assembly instructions for the WCP Stub Rollers.

Step 1

The 1/2" ID bearings will be installed as shown below. The bearings should be recessed into the Roller Hub.

Step 1B (Optional)

The inside bearing can be retained in the Roller Hub Assembly using a snap ring. This snap ring is not necessary and is only intended to be used when the rollers will be used with a shaft running throughout. This will prevent the bearing from backing out during use.

Step 2

Insert the correct Stub Shaft into the Roller Hub assembly and secure this with the 1/2" Snap Ring. Refer back to the compatibility chart to ensure that the correct Stub Shaft is being used for the Roller Hub.

Step 3

Insert the assembled Stub Roller Hub Assembly into the Tube and secure using #10-32 x 1/4"L bolts.

Step 4

Thread the bolt through your desired mounting surface and into the Stub Shaft. Use the Stub Shaft Wrench to hold the Stub Shaft in place while tightening the bolt.

The WCP Stub Rollers can be used with both 1-1/8" ID Aluminum Round Tube Stock and SplineXL Tube Stock. Use the images below for material preparation and compatibility information.

Compatibility Chart

Cut Guides

For both the Round Tube and SplineXL Tubes, a #9 hole will need to be drilled 0.500" from each end that will have the Stub Roller. Use the pictures below for a detailed view.

Stub Roller Shafts

1/2" OD Stub Shaft (1-3/4" L) (2-Pack) (WCP-1741)

1/2" OD Stub Shaft (2-1/4" L) (2-Pack) (WCP-1742)

1/2" OD Stub Shaft (2-3/4" L) (2-Pack) (WCP-1743)

Stub Shaft Wrench (7/16" ID) (WCP-1744)

Roller Hubs

Round ID

Aluminum Stub Roller Hub (1-1/8" OD) (WCP-1746)

Aluminum Stub Roller Hub (1-1/8" OD to 20t HTD 5mm Pulley) (WCP-1748)

Aluminum Stub Roller Hub (1-1/8" OD to SplineXL OD) (WCP-1752)

SplineXL ID

SplineXL ID Aluminum Stub Roller Hub (WCP-1745)

Aluminum Stub Roller Hub (SplineXL ID to 20t HTD 5mm Pulley) (WCP-1747)

Aluminum Stub Roller Hub (SplineXL ID to SplineXL OD) (WCP-1751)

The WCP Stub Rollers are directly compatible with the Roller System and make for perfect rollers as they remove the need for a shaft to be ran throughout the entire roller as shown in the pictures below.

Round Roller System

The roller example below uses the 1-1/8" OD to 20t HTD 5mm Pulley Stub Roller Hub (WCP-1748) and the 2-1/4"L Stub Shaft (WCP-1742) to create a simple, powered roller. This setup eliminates the need for teams to print or machine custom parts, streamlining the assembly process.

SplineXL Roller System

The roller example below uses the SplineXL ID to 20t HTD 5mm Pulley Stub Roller Hub (WCP-1747) and the 2-1/4"L Stub Shaft (WCP-1742) to create a simple, powered roller. This setup eliminates the need for teams to print or machine custom parts, streamlining the assembly process.

Manual Updates

Product Updates