Single machined needle roller bearing NA4964, 320 mm ID, 440 mm OD, 118 mm width, high carbon steel inner ring with oil hole, caged open metric NA49 series for heavy load applications

Machined NA4964 needle roller bearing 320×440×118
✔️ ID 320 mm, OD 440 mm, W 118 mm, high-carbon steel inner ring oil hole

This is a single machined-type needle roller bearing designed for shafts, gearboxes, conveyors and heavy industrial equipment where compact radial capacity is needed.

✅ Model NA4964, NA49 metric series
✅ Inside diameter 320 mm, outside diameter 440 mm, width 118 mm
✅ High-carbon steel caged machined inner ring, open enclosure
✅ Oil hole for lubrication, inner ring included, single bearing pack
✅ Dynamic capacity 1,170,000 N; static capacity 2,830,000 N
✅ Max speed 750 rpm; weight approx 1.000 lb; SKU 864073

💡 What is a metric needle roller bearing used for? Needle roller bearings deliver high radial load support in tight spaces and are handy where low cross-section and high-capacity shaft support are required. Quick look at common uses and related keywords: - Heavy machinery shafts, gearboxes and conveyors; shaft support and compact radial bearing solutions - Linear slide unit alternatives and comparisons with sealed ball bearing or ceramic options for space-constrained designs - Maintenance and lubrication advice for oil-hole, caged machined inner ring bearings