KT477NC3 roller cage single part, 4 mm ID x 7 mm OD x 7 mm width, synthetic resin, C3 diameter tolerance, needle bearing retainer for linear slide units and sealed ball bearing swaps

KT477NC3 needle roller cage, 4×7×7 mm, single part
✔️ Resin cage, C3 tolerance, dyn 1800 N, stat 1300 N, 100°C

This single KT477NC3 needle roller cage uses a synthetic resin retainer to guide rollers in compact, high-speed assemblies like linear slide units, transmissions, and precision gearboxes.

✅ Model KT477NC3, series KT-N, single piece
✅ Dimensions I.D. 4 mm, O.D. 7 mm, Width 7 mm
✅ Cage material synthetic resin, temperature rating 100°C
✅ Tolerance C3 roller diameter clearance for smooth operation
✅ Loads & speed dynamic 1800 N, static 1300 N, max 100000 rpm
✅ Application fits compact needle bearings, linear slide unit installs

💡 What is a needle roller cage used for in linear slide units and precision machinery? A needle roller cage keeps rollers spaced and guided so small bearings handle loads and run smoothly at high speed. Short intro sentence: This makes them handy in tight, high-rpm setups. - Improves roller guidance in linear slide unit and miniature bearing assemblies - Works as a drop-in option when replacing sealed ball bearing or ceramic hybrid units - Supports high rpm and thermal demands up to the rated temperature for compact transmissions - Choose C3 tolerance when extra roller clearance is needed for speed or thermal expansion