Single Machined Needle Roller TR405520, 40 mm I.D., 55 mm O.D., 20 mm Width; Caged Heavy Duty Carbon Steel with Oil Holes for Linear Slide Units, Rotary High-Speed Use, Sealed Ball Replacement

Single machined needle roller bearing 40 mm x 55 mm x 20 mm
✔️ Caged carbon steel, oil holes; TR405520; 40 mm I.D., 55 mm O.D., 20 mm W

This single machined-type needle roller bearing (model TR405520) is a caged, heavy-duty carbon-steel unit with oil holes for lubrication. It’s typically used in linear slide units, gearboxes, and compact rotary assemblies where tight radial support is needed.

✅ Model TR405520, TR Metric Series, caged heavy-duty machined type
✅ Inner diameter 40 mm; outer diameter 55 mm; width 20 mm
✅ Material: high carbon steel; open enclosure; oil holes included
✅ Single-row needle rollers; dynamic load capacity 37400 N; static 55700 N
✅ Maximum speed up to 10000 rpm; single bearing per pack; weight 0.280 lb each

💡 What is a needle roller bearing used for in high-speed linear slide units? Needle roller bearings offer compact, high-radial-capacity support and are handy when space and stiffness matter. Here’s why they’re useful: - High radial load capacity in a small envelope ideal for linear slide units and compact gearboxes - Caged machined types with oil holes simplify lubrication and maintenance in rotary systems - Preferred over sealed ball bearings when radial stiffness per size is the priority