Needle Roller Cage KT404820C3, 40 mm ID x 48 mm OD x 20 mm W, High Carbon Steel, C3 Roller Tolerance, Single Piece for Linear Slide and Sealed Ball Bearing Use

KT404820C3 needle roller cage, 40 x 48 x 20 mm single piece
✔️ High carbon steel, C3 roller tolerance, 31400 N dyn load, 12000 rpm

This single-piece needle roller cage is a high carbon steel retainer for 40 mm ID applications. It’s used in compact linear slide units, sealed ball bearing assemblies, transmissions, and industrial machinery where space and load capacity matter.

✅ Model: KT404820C3, KT Series, single piece
✅ Inside diameter 40 mm, outside diameter 48 mm, width 20 mm
✅ Material: high carbon steel; C3 tolerance for roller diameter
✅ Dynamic load capacity 31400 N; static load 48000 N; max speed 12000 rpm
✅ Temperature range -20 to 120 °C; weight approx 0.120 lb (0.054 kg)
✅ Designed for linear slide unit, sealed ball bearing setups, and transmission use; compatible with ceramic roller options

💡 What is a needle roller cage used for? A needle roller cage holds and spaces needle rollers so they can carry high radial loads in a low-profile package. It’s a handy component when you need compact, reliable rolling-element support. Here are common applications and keyword-rich uses: - Ideal for linear slide unit guides and compact rail systems for precise linear motion - Used in sealed ball bearing and hybrid bearing assemblies to reduce friction and maintain roller spacing - Common in automotive transmissions, gearboxes, and tight industrial machinery for high radial load support - Works with ceramic or steel rollers for higher speed, temperature, and durability demands