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.

Cylindrical Roller Bearings
Standard & Custom Sizes Supplied
Speed Boundary Up to 18,000 RPM
Load Capacity Ultra-High Radial
Protection NU / NJ / NUP Types
Fit & Clearance Machined Brass Cages
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 204 E 20 mm 47 mm 14 mm 26.5 kN 22.4 kN 18,000 RPM Non-locating outer ribs
NU 205 E 25 mm 52 mm 15 mm 32.5 kN 28.5 kN 15,000 RPM Non-locating outer ribs
NU 206 E 30 mm 62 mm 16 mm 44.0 kN 37.5 kN 13,000 RPM Non-locating outer ribs
NU 207 E 35 mm 72 mm 17 mm 56.0 kN 49.0 kN 11,000 RPM Non-locating outer ribs
NU 208 E 40 mm 80 mm 18 mm 64.0 kN 58.5 kN 9,500 RPM Non-locating outer ribs
NU 209 E 45 mm 85 mm 19 mm 72.0 kN 67.0 kN 8,500 RPM Non-locating outer ribs
NU 210 E 50 mm 90 mm 20 mm 76.5 kN 73.5 kN 8,000 RPM Non-locating outer ribs
NU 211 E 55 mm 100 mm 21 mm 95.0 kN 93.0 kN 7,500 RPM Non-locating outer ribs
NU 212 E 60 mm 110 mm 22 mm 108 kN 106 kN 6,700 RPM Non-locating outer ribs
NU 213 E 65 mm 120 mm 23 mm 125 kN 125 kN 6,300 RPM Non-locating outer ribs
NU 214 E 70 mm 125 mm 24 mm 134 kN 137 kN 5,600 RPM Non-locating outer ribs
NU 215 E 75 mm 130 mm 25 mm 143 kN 146 kN 5,300 RPM Non-locating outer ribs
NU 216 E 80 mm 140 mm 26 mm 156 kN 166 kN 5,000 RPM Non-locating outer ribs
NU 217 E 85 mm 150 mm 28 mm 183 kN 196 kN 4,800 RPM Non-locating outer ribs
NU 218 E 90 mm 160 mm 30 mm 212 kN 232 kN 4,500 RPM Non-locating outer ribs
NU 220 E 100 mm 180 mm 34 mm 265 kN 290 kN 3,800 RPM Non-locating outer ribs
NU 305 E 25 mm 62 mm 17 mm 46.5 kN 39.0 kN 13,000 RPM Non-locating outer ribs
NU 306 E 30 mm 72 mm 19 mm 58.5 kN 52.0 kN 11,000 RPM Non-locating outer ribs
NU 307 E 35 mm 80 mm 21 mm 73.5 kN 67.0 kN 9,500 RPM Non-locating outer ribs
NU 308 E 40 mm 90 mm 23 mm 90.0 kN 83.0 kN 8,500 RPM Non-locating outer ribs
NU 309 E 45 mm 100 mm 25 mm 108 kN 102 kN 7,500 RPM Non-locating outer ribs
NU 310 E 50 mm 110 mm 27 mm 127 kN 122 kN 7,000 RPM Non-locating outer ribs
NU 311 E 55 mm 120 mm 29 mm 150 kN 146 kN 6,300 RPM Non-locating outer ribs
NU 312 E 60 mm 130 mm 31 mm 176 kN 173 kN 5,600 RPM Non-locating outer ribs
NU 313 E 65 mm 140 mm 33 mm 200 kN 200 kN 5,300 RPM Non-locating outer ribs
NU 314 E 70 mm 150 mm 35 mm 224 kN 228 kN 5,000 RPM Non-locating outer ribs
NU 315 E 75 mm 160 mm 37 mm 255 kN 260 kN 4,800 RPM Non-locating outer ribs
NU 316 E 80 mm 170 mm 39 mm 285 kN 300 kN 4,500 RPM Non-locating outer ribs
NU 318 E 90 mm 190 mm 43 mm 345 kN 375 kN 3,800 RPM Non-locating outer ribs
NU 320 E 100 mm 215 mm 47 mm 430 kN 465 kN 3,400 RPM Non-locating outer ribs
NJ 205 E 25 mm 52 mm 15 mm 32.5 kN 28.5 kN 15,000 RPM Semi-locating one inner rib
NJ 206 E 30 mm 62 mm 16 mm 44.0 kN 37.5 kN 13,000 RPM Semi-locating one inner rib
NJ 207 E 35 mm 72 mm 17 mm 56.0 kN 49.0 kN 11,000 RPM Semi-locating one inner rib
NJ 208 E 40 mm 80 mm 18 mm 64.0 kN 58.5 kN 9,500 RPM Semi-locating one inner rib
NJ 210 E 50 mm 90 mm 20 mm 76.5 kN 73.5 kN 8,000 RPM Semi-locating one inner rib
NJ 212 E 60 mm 110 mm 22 mm 108 kN 106 kN 6,700 RPM Semi-locating one inner rib
NJ 308 E 40 mm 90 mm 23 mm 90.0 kN 83.0 kN 8,500 RPM Semi-locating one inner rib
NJ 310 E 50 mm 110 mm 27 mm 127 kN 122 kN 7,000 RPM Semi-locating one inner rib
NJ 312 E 60 mm 130 mm 31 mm 176 kN 173 kN 5,600 RPM Semi-locating one inner rib
NUP 205 E 25 mm 52 mm 15 mm 32.5 kN 28.5 kN 15,000 RPM Fixed locating loose collar
NUP 206 E 30 mm 62 mm 16 mm 44.0 kN 37.5 kN 13,000 RPM Fixed locating loose collar
NUP 208 E 40 mm 80 mm 18 mm 64.0 kN 58.5 kN 9,500 RPM Fixed locating loose collar
NUP 210 E 50 mm 90 mm 20 mm 76.5 kN 73.5 kN 8,000 RPM Fixed locating loose collar
NUP 308 E 40 mm 90 mm 23 mm 90.0 kN 83.0 kN 8,500 RPM Fixed locating loose collar
NUP 310 E 50 mm 110 mm 27 mm 127 kN 122 kN 7,000 RPM Fixed locating loose collar
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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.

Cylindrical Roller Bearings Category
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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