ISO 9001 Sourced SAE 52100 Chrome Steel

Cylindrical Roller Bearings

Line-contact roller geometry providing maximum radial load capability, high stiffness, and suitability for heavy industrial equipment.

                             Standard & Custom Sizes In Stock
                        

Engineering Data Sheet

Technical Specifications & Sizing Chart

Standard metric dimensional chart and load parameters. Filter by model, bore (d), outer diameter (D), or width (B).

Bearing Model	Bore (d)	Outer Dia (D)	Width (B)	Dynamic Load (Cr)	Static Load (Cor)	Limiting Speed (Oil)	Style Guide
NU 205 E	25 mm	52 mm	15 mm	32.5 kN	28.5 kN	13,000 RPM	Non-Locating (NU)
NU 208 E	40 mm	80 mm	18 mm	56.2 kN	52.0 kN	8,500 RPM	Non-Locating (NU)
NU 210 E	50 mm	90 mm	20 mm	69.3 kN	69.5 kN	7,200 RPM	Non-Locating (NU)
NU 310 E	50 mm	110 mm	27 mm	110.0 kN	108.0 kN	6,300 RPM	Non-Locating (NU)
NU 312 E	60 mm	130 mm	31 mm	153.0 kN	150.0 kN	5,300 RPM	Non-Locating (NU)
NJ 2206 E	30 mm	62 mm	20 mm	48.5 kN	48.0 kN	9,500 RPM	One-Way locating (NJ)
NJ 2210 E	50 mm	90 mm	23 mm	86.5 kN	95.0 kN	6,700 RPM	One-Way locating (NJ)
NUP 315 E	75 mm	160 mm	37 mm	236.0 kN	250.0 kN	4,300 RPM	Two-Way locating (NUP)

Engineered for Heavy Industrial Loads

Cylindrical Roller Bearings feature modified line contact between rollers and raceways to prevent stress concentrations, providing superior radial load capacity.

BMT Impex supplies NU, NJ, NUP, and N design series with steel or solid brass cages engineered for gearboxes and electric motors.

Engineering Insights

Bearing Nomenclature & Clearance Guide

Understanding technical suffixes, clearance prefixes, and material ratings used in industrial procurement.

Suffix & Prefix Reference

2RS / DDU: Double lip synthetic NBR rubber seals for moisture & dust exclusion.
ZZ / 2Z: Double pressed-steel non-contact shields for grease retention at high speeds.
K / N: Tapered bore (K) or snap ring groove (N) for specific mounting configurations.
M / Y: Machined brass cage (M) or pressed steel cage (Y) for heavy industrial loads.

Radial Internal Clearance (RIC)

C2 (Tight): Less than normal clearance. Used for high-precision shafts to minimize vibration.
CN (Normal): Standard fit for general industrial applications under normal temperatures.
C3 (Loose): Greater than normal clearance. Compensates for thermal expansion in electric motors.
C4 / C5: Massive internal space for kilns and gearboxes running at extreme temperatures.

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