Bearing RMS 18 NSK

proper Size / Dimensions

• Inner (bore) diameter (d): 57.15 mm (2.25 inch)

• Outer diameter (D): 127 mm (5 inch)

• Width (B): 31.75 mm (1.25 inch)

These are the standard imperial RMS 18 dimensions common to RMS18 bearings across brands.

⚙️ Design & Construction

• Type: Single‑row deep groove ball bearing — versatile for radial loads with moderate axial capacity.

• Seal/Shield: Open design (no seals/shields) — allows custom lubrication application.

• Bore Type: Straight (cylindrical) bore — press‑fit on shaft.

• Cage Material: Typical steel or stainless‑steel cage (brand‑dependent).

• Material: Chrome steel balls and rings for durability and wear resistance.

• Tolerance/Internal Clearance: Standard industrial precision and normal internal clearance (CN).

📊 Performance Highlights

• Dynamic load rating: ~81.9 kN (~18412 lbf)

• Static load rating: ~52 kN (~11690 lbf)

• Speed capability: Typical maximum speeds around 7 000–8 000 rpm (grease/oil) depending on lubrication and conditions.

• Weight: ~1.68–1.72 kg (open type).