Needle Roller Cage KT91210C3 Single 9 mm ID x 12 mm OD x 10 mm Width, High Carbon Steel, C3 tolerance on diameter, Ideal for linear slide units, sealed ball bearing swaps, machinery parts

Single needle roller cage KT91210C3, 9 mm ID x 12 mm OD
✔️ 10 mm width, High Carbon Steel, C3 tolerance, 3900 N dynamic

This single needle roller cage is a compact retention ring for needle rollers, used in linear slide units, gearboxes, and tight radial spaces. Commonly chosen where sealed ball bearing swaps or high speed operation are needed.

✅ 9 mm inside diameter (ID)
✅ 12 mm outside diameter (OD)
✅ 10 mm width, single piece (pack of 1)
✅ High Carbon Steel material, series KT91210C3
✅ C3 tolerance on roller diameter, max speed 55,000 rpm
✅ Dynamic capacity 3900 N, static capacity 4070 N, temp -20 to 120 C
✅ Great for linear slide unit retrofits and sealed ball bearing replacements

💡 What is a needle roller cage used for in linear slide units and sealed bearing applications? A needle roller cage holds and spaces needle rollers so they run true in tight radial spaces. - Ideal when you need a compact rolling element for linear slide units and small gearboxes. - Commonly used as a replacement or upgrade in sealed ball bearing swaps where lower profile rollers help. - Works well alongside ceramic rolling elements or in systems that require high rpm and tight tolerance control.