Image: ServoCity
12mm ID Linear Ball Bearing (21mm OD, 57mm Length) - 2 Pack
12mm ID Linear Ball Bearing (21mm OD, 57mm Length) - 2 Pack — bearings by goBILDA®.
No second supplier matched for this listing — ServoCity is the only route we can offer today. Our cross-store matching covers only part of the catalogue.
ServoCity: ships in 1–2 business days. Its shipping policy says: “Please Note: Pre-shipping order handling usually takes 1-2 business days. Some orders may take up to 5 days to process and ship.” Policy, read 8 Oct 2026. That is the supplier’s dispatch time, not a delivery date; carrier transit is extra.
- Material
- High-Carbon Steel Housing and Balls, Plastic Cage, Rubber Seals
- Weight
- 50 g(vendor states 1.76oz (50g))
- Length
- 57 mm
- Inner diameter
- 12 mm
- Outer diameter
- 21 mm
Videos
· 3 from the supplier's pageSummary
AI-generatedAI-generated from this listing’s specifications and description. Check the datasheet before you rely on it.
A 12mm inner diameter linear ball bearing with a 21mm outer diameter and 57 mm length, sold as a two-pack. It guides a round shaft or rod in a straight line in a robot mechanism, with a housing and balls of high-carbon steel, a plastic cage and rubber seals. The listing does not state a load rating, a fitting tolerance or a mounting method for the housing, so confirm those details before designing the slide. Typical uses are linear carriages, lifts and camera slides that need low-friction travel along a round shaft.