Click for larger image and other views

How can we improve our images or Product Specifications?

Boston Gear JPE371/8 Universal Joint with Slide Extension, Molded, 0.125" Bore, 0.520" Bore Depth, 0.375" Outside Diameter, 8-5 ft/lbs Max Recommended Torque (Closed-Open), Delrin

Be the first to review this item


Specifications for this item
Number of Items
Part Number
Brand Name
Boston Gear

This item is no longer available

This item ships for FREE with 2-Day Shipping on orders over $50. (Details)

Want it delivered on Mon, Apr 20? Order in-stock items in the next 11 hrs 21 mins and choose One-Day Shipping at checkout.

  • Share

This item has already been added to

Update Quantity Cancel

Select a List Create New List

You can add a description later

Key Features

  • Double universal joint for applications with up to 90 degrees angular misalignment
  • Molded polymer body for vibration dampening and electrical insulation
  • Nickel-plated brass spiders and inserts for resistance to corrosion
  • Telescoping extension slide for lateral movement
  • Set screws for secure attachment to shaft

Package Details

Shipping Weight: 0.05 pounds
Package Size: 4.2 x 2.6 x 0.6 inches

Product Description

This Boston Gear JPE371/8 double universal joint is a molded coupling for connecting two rotating shafts at angles up to 90 degrees. It compensates for angular misalignment and shaft separation and has a double joint configuration, providing two points of flexion to help minimize speed fluctuations and torsional vibration during operation. It has a molded polymer body for vibration dampening and electrical insulation, and it has nickel-plated brass spiders and inserts for resistance to corrosion. The telescoping extension slide can be set open or closed for lateral movement. Set screws secure the joint into position on the shafts, and each hub has a .125" bore for connecting shafts of the same diameter. It has a maximum ambient temperature of 180 degree F. This universal joint provides a uniform speed ratio between driving and driven shafts, and is suitable for applications requiring moderate torque transmission, such as farm implements, material handling equipment, and drive shafts.

Universal joints (also called U-joints, universal couplings, Cardan joints, Hooke’s joints, or Hardy-Spicer joints) are used to transmit motion and rotational power, or torque, between two shafts that are offset at an angle. Most universal joints consist of two yokes and a middle assembly; the hub end of each yoke attaches to a shaft while the yoke ears attach to and pivot around the middle assembly to accommodate shaft misalignment. The type of middle assembly determines its usage—pin and block joints are suitable for transmitting high torque, needle bearing joints are used to handle high rotational speeds, and ball and socket joints are used in applications requiring low backlash (play between moving parts). The body of the universal joint may include a single joint to accommodate only angular misalignments between shafts, or two joints to accommodate both angular and parallel misalignments. Available in a variety of materials and configurations, universal joints are used in applications including motor vehicles, conveyors, medical and optical devices, forestry and mining equipment, robotics and space exploration, and aeronautics, among others.

Boston Gear manufactures gears, gear drives, bearings, valves, shaft collars, couplings, and other power and fluid transmission components. The company, founded in 1877, is headquartered in Charlotte, NC, and meets International Organization for Standardization (ISO) standard 9001:2008 standard.

How can we improve our Product Description?

Customer Reviews

There are no customer reviews yet.

Be the first to review this item

Go to the HomePage

Order by Phone
M-F 8am-10pm ET, Sat-Sun 8am-5pm ET 800-220-4242

My Account| Returns| Help

Website Feedback| Contact Us| Sell on AmazonSupply| Become an Affiliate

Privacy Notice| Conditions of Use

Follow Us 

© 2015, Inc. and its affiliates.