Fairlane BBU-105-D Swivel Gripper Assembly Base 4-40

Product Description

The FAIRLANE BBU-105-D is a swivel action gripper assembly base designed for precision workholding and fixturing applications. Built from alloy steel with a black oxide finish, this base unit accepts a 4-40 threaded connection and features a 5/32 inch Delrin ball with a flat contact pad surface. The black oxide coating provides corrosion resistance in shop environments. With a load rating of 1,835 pounds, this gripper base delivers reliable clamping force for automated and manual fixture setups. It is installed by machinists, tooling engineers, and fixture builders working in production or maintenance environments.

This gripper assembly base is suited for use in machine tool fixtures, assembly jigs, robotic end-of-arm tooling, and workholding systems where a low-profile, swivel-action contact point is required. The flat ball pad surface distributes clamping load evenly across the contact area. The Delrin ball resists marring on finished or soft workpiece surfaces. The base mounts into a tapped 4-40 hole and can be threaded to the required standoff depth for the application.

Key Features

• 4-40 thread size with 5/16 inch thread length for standard tapped-hole installation
• 5/32 inch Delrin ball provides non-marring swivel contact on workpiece surfaces
• Flat ball pad surface for even load distribution across the contact zone
• 1,835 pound load rating for demanding fixturing and workholding applications
• Alloy steel body with black oxide finish for strength and corrosion resistance
• Compact profile: 3/8 inch diameter, 1/2 inch overall height, 1/16 inch standoff

Compatibility

Designed as a direct-fit replacement or new-installation component for fixtures and tooling systems using 4-40 tapped mounting holes requiring a swivel-action gripper base with a 3/8 inch body diameter.

Installation Notes

Installation is performed by tooling technicians or machinists using standard hex keys or socket tooling rated for 4-40 fasteners. Thread the base into a properly tapped 4-40 hole and adjust to the required standoff before securing. Ensure the mating tapped hole meets minimum thread engagement depth for the rated load. Do not exceed the stated load rating or apply side loads beyond the design envelope of the swivel mechanism.