SHS Steel Ball Bearing Set

Ball bearings replace the plain bushing with a caged race, swapping a sliding contact for a rolling one. Less friction reaches the motor, and the gear train spins up more readily.

The gain is real but modest, and it comes with a condition. Bearings do their best work on builds that are quick rather than punishing, where the loads stay within what a small race can absorb.

Behind a heavy spring the picture changes. Shock loading can indent the races over time, and a bearing that has started to feel gritty is doing less good than the bushing it replaced.

Specifications

Good to know before you buy

Bearings are a speed-build part more than a durability one. If your gun runs a stiff spring and a torque motor, plain bushings are the more sensible fitting and cost less.

Frequently asked questions

Will bearings raise my rate of fire?
A little, by cutting friction in the gear train. It is a smaller effect than the motor, the battery or the gear ratio.

How do I know what size to order?
By the shell rather than the gun. Measure the bushing or bearing you take out before ordering.

How long do they last?
That depends entirely on spring rate. Light builds get years out of a set; heavy ones can flatten the races in a season.