RNA49/32UU Single Machined Caged Needle Roller Bearing, 40 mm ID x 52 mm OD x 20 mm Width, High Carbon Steel, Single-Row Sealed with Oil Hole for Linear Slide Unit and High-Speed Applications
✔️ 40 mm ID x 52 mm OD x 20 mm width, high carbon steel
This single RNA49/32UU is a machined, caged, sealed needle roller bearing with an oil hole, made for compact shafts, linear slide units, and high-speed rotational assemblies. Sold as one bearing (1 piece).
✅ Model: RNA49/32UU✅ Type: Machined caged needle roller, single-row
✅ Inner diameter: 40 mm (1,575 in)
✅ Outer diameter: 52 mm (2.047 in)
✅ Width: 20 mm (0.787 in)
✅ Material: High carbon steel; synthetic rubber seals
✅ Oil hole included; machined cage for consistent fit
✅ Dynamic load capacity: 29,400 N; Static load capacity: 44,200 N
✅ Maximum speed: 5,000 rpm; Series: RNA49 metric series
✅ Sold as a single bearing, weight ~0.210 lb each
💡 What is a caged needle roller bearing used for in linear slide units and compact shafts? Needle roller bearings give high radial capacity in tight radial space while keeping lubrication and alignment under control. Quick take: - Ideal when you need a sealed bearing alternative to a sealed ball bearing for compact radial load support and low-profile shafts. - Commonly used in linear slide unit assemblies, compact gearboxes, and shaft supports where a ceramic option is not required. - Caged machined types are handy for repeatable internal clearance, oil-hole lubrication, and stable high-speed operation.