Needle Roller Cage KT152115C3 Single Unit, 15 mm ID x 21 mm OD x 15 mm W, High Carbon Steel, C3 Tolerance, KT Series for Linear Slide Units and Machinery

Single needle roller cage KT152115C3, 15 x 21 x 15 mm
✔️ High carbon steel, C3 tolerance, KT Series, 15 mm bore

This single needle roller cage (model KT152115C3) is a high-carbon-steel component that spaces and guides needle rollers inside needle-style bearings. It’s commonly used in linear slide units, precision gearboxes, and compact machinery where tight-fit roller alignment improves performance.

✅ Model: KT152115C3, KT Series, single unit
✅ Bore (ID): 15 mm; Outside Diameter (OD): 21 mm; Width: 15 mm
✅ Material: high carbon steel; C3 tolerance for roller diameter
✅ Dynamic load capacity: 12600 N; Static load capacity: 13500 N; Max speed: 35000 rpm
✅ Temperature rating: -20 to 120 deg C; Weight: 0.030 lb; SKU: 1911673

💡 What is a needle roller cage used for in linear slide units and compact machinery? A needle roller cage holds and spaces needle rollers to reduce friction, keep rollers aligned, and help bearings carry radial loads reliably in tight assemblies. Here’s why it's handy: - Keeps rollers evenly spaced for smooth motion in linear slide units and guide rails - Enhances load sharing and bearing life, useful alongside sealed ball bearing or ceramic components - Fits compact gearboxes, actuators, and automation equipment where space and precision matter