Roller follower NART20R single metric 20 mm ID non-separable caged high-carbon chrome steel open crowned with oil hole for linear slide units sealed ball bearing alternative

Single metric 20 mm roller follower NART20R
✔️ Non-separable caged, high-carbon chrome steel, open, oil hole

This single roller follower is a non-separable, caged metric bearing (20 mm ID) designed for linear slide units, cam followers, automation equipment, conveyors and machine-tool applications. It provides smooth contact with a crowned roller profile and an oil hole for easy re-lubrication.

✅ Model NART20R, single unit, NART Metric Series
✅ Inside diameter (ID): 20 mm
✅ Roller diameter: 47 mm, roller width: 24 mm
✅ Overall width: 25 mm, caged retainer
✅ Material: high carbon chrome steel, crowned roller surface
✅ Type: caged non-separable, open design with oil hole
✅ Dynamic load capacity: 23000 N, static load: 30700 N
✅ Temperature rating: -20 to 120 °C, for linear slide unit duty

💡 What is a roller follower used for in linear slide units? A roller follower supports radial loads and tracks cams or guide rails to convert motion while minimizing friction and wear. It’s a handy component for precise motion control in automated systems. Quick summary: - Supports radial and moderate axial loads for linear slide units and cam-following tasks - Crowned roller profile reduces edge loading for smoother motion and longer life - Caged design limits roller-to-roller contact for higher speeds and better reliability - Often chosen over sealed ball bearing or pillow block bearing when cam contact and relubrication access are needed