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Modify Tech J-caged Hybrid Ceramic Ball Bearing 8mm

ID: 40061 (Bearings-GB-03-33)
4.7 stars, based on 9 reviews
Modify Tech J-caged Hybrid Ceramic Ball Bearing 8mm
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The manufacturer of this product enforces a strict minimum advertised price (MAP) policy which excludes this product from any additional discount coupon codes. This item, however, may qualify for free shipping.
Ceramic balls are over 100% harder than steel balls. In a hybrid bearing, the extremely hard and smooth Ceramic Ball keeps raceways clear of contaminants by pushing them away from the contact patch. In addition, the ceramic ball remains extremely smooth, preventing ball to race damage. For the end user, this means reduced bearing wear and longer bearing life at high precision.

Compatibility: For use with 8mm Airsoft AEG Gearboxes
Material: Silicon Nitride Ceramic, Steel

Manufacturer: Modify

9 Customer Reviews

(Write a review)

by Jeffrey C. on 02/04/2022
"These j caged ceramic ball bearing are the best. I've popped steal j caged prommy and umbrella brand bearing on high stress builds for dsg and dmrs. But these bearings from modify I've never popped no matter what I throw in the gearbox. These are the best, if anyone says otherwise they are lying cause they never tried these before.
by Caleb H. on 11/26/2019

I've run steel ball bearings in my gearbox, but these are next level. If you spin one in your hand, you'll immediately feel how smooth they are. There's no "textured" feeling of the balls rolling over the races, it's just smooth as glass (or in this case, ceramic).

Have used these for a few thousand rounds; no complaints. I only run an M120 spring, so not really a severe duty build. They press flawlessly into a Retro Arms gearbox shell (tolerances on both are bang-on). No need for super glue to hold them in.

If you DO press them in, make sure you have a tool of some kind to press the OUTER race of the bearing into the gearbox shell. If you hammer on the center, you could damage the bearing (that goes for any ball bearing, not just these).
by John M. on 08/02/2016
"Probably the best 30$ I put into my gearbox. Spins so long and super quiet u cannot hear anything but the piston. 5 outa 5

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