• NTN NK+IR Machined-Ring Needle Roller Bearings, with Inner Ring
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NTN NK+IR Machined-Ring Needle Roller Bearings, with Inner Ring

NTN NK+IR Machined-Ring Needle Roller Bearings, with Inner Ring

NTN NK+IR machined-ring needle roller bearings with inner ring, bore 5-150 mm, for shafts that cannot be hardened.

Key features

  • Machined outer ring, needle roller and cage assembly plus inner ring
  • For use where the shaft cannot serve as a raceway
  • NK+IR / NKS+IR: bearing and inner ring ordered as a set (IR d x F x B)
  • High radial load capacity in compact radial space

Specifications

Series NK+IR
Bearing type Machined-ring needle roller bearing
Size range 5-150 mm
Load rating unit kN
Brand NTN
Source NTN NTN Machined Ring Needle Roller Bearings catalogue, p. B-70-B-83
NK8/12T2+IR5x8x12 d: 5 mm | D: 15 mm | C: 12 mm | Cr: 4 kN | C0r: 4.1 kN
NK8/16T2+IR5x8x16 d: 5 mm | D: 15 mm | C: 16 mm | Cr: 4.85 kN | C0r: 5.2 kN
NK9/12T2+IR6x9x12 d: 6 mm | D: 16 mm | C: 12 mm | Cr: 4.55 kN | C0r: 5 kN
NK9/16T2+IR6x9x16 d: 6 mm | D: 16 mm | C: 16 mm | Cr: 5.5 kN | C0r: 6.4 kN
NK10/12T2+IR7x10x12 d: 7 mm | D: 17 mm | C: 12 mm | Cr: 4.55 kN | C0r: 5.1 kN
8E-NK10/16CT+IR7x10x16 d: 7 mm | D: 17 mm | C: 16 mm | Cr: 5.45 kN | C0r: 6.45 kN
NK12/12+IR9x12x12 d: 9 mm | D: 19 mm | C: 12 mm | Cr: 5 kN | C0r: 6.1 kN
NK12/16+IR9x12x16 d: 9 mm | D: 19 mm | C: 16 mm | Cr: 6 kN | C0r: 7.7 kN
NK14/16R+IR10x14x16 d: 10 mm | D: 22 mm | C: 16 mm | Cr: 10.3 kN | C0r: 11.5 kN
NK14/20R+IR10x14x20 d: 10 mm | D: 22 mm | C: 20 mm | Cr: 13 kN | C0r: 15.6 kN
NK16/16R+IR12x16x16 d: 12 mm | D: 24 mm | C: 16 mm | Cr: 12.2 kN | C0r: 14.9 kN
NK16/20R+IR12x16x20 d: 12 mm | D: 24 mm | C: 20 mm | Cr: 14.6 kN | C0r: 18.8 kN
NK19/16R+IR15x19x16 d: 15 mm | D: 27 mm | C: 16 mm | Cr: 13.3 kN | C0r: 17.4 kN
NK19/20R+IR15x19x20 d: 15 mm | D: 27 mm | C: 20 mm | Cr: 16 kN | C0r: 22.2 kN
NK21/16R+IR17x21x16 d: 17 mm | D: 29 mm | C: 16 mm | Cr: 13.7 kN | C0r: 18.7 kN
NK21/20R+IR17x21x20 d: 17 mm | D: 29 mm | C: 20 mm | Cr: 17.4 kN | C0r: 25.4 kN
NK24/16R+IR20x24x16 d: 20 mm | D: 32 mm | C: 16 mm | Cr: 15.2 kN | C0r: 22.3 kN
NK24/20R+IR20x24x20 d: 20 mm | D: 32 mm | C: 20 mm | Cr: 18.6 kN | C0r: 28.8 kN
NK26/16R+IR22x26x16 d: 22 mm | D: 34 mm | C: 16 mm | Cr: 15.6 kN | C0r: 23.6 kN
NK26/20R+IR22x26x20 d: 22 mm | D: 34 mm | C: 20 mm | Cr: 19.1 kN | C0r: 30.5 kN
NK29/20R+IR25x29x20 d: 25 mm | D: 38 mm | C: 20 mm | Cr: 22.2 kN | C0r: 34 kN
NK29/30R+IR25x29x30 d: 25 mm | D: 38 mm | C: 30 mm | Cr: 27.5 kN | C0r: 50.5 kN
NK32/20R+IR28x32x20 d: 28 mm | D: 42 mm | C: 20 mm | Cr: 23.5 kN | C0r: 37.5 kN
NK32/30R+IR28x32x30 d: 28 mm | D: 42 mm | C: 30 mm | Cr: 34 kN | C0r: 60.5 kN
NK35/20RCT+IR30x35x20 d: 30 mm | D: 45 mm | C: 20 mm | Cr: 24.8 kN | C0r: 41.5 kN
NK35/30R+IR30x35x30 d: 30 mm | D: 45 mm | C: 30 mm | Cr: 36 kN | C0r: 66.5 kN
NK37/20R+IR32x37x20 d: 32 mm | D: 47 mm | C: 20 mm | Cr: 25.3 kN | C0r: 43.5 kN
NK37/30R+IR32x37x30 d: 32 mm | D: 47 mm | C: 30 mm | Cr: 36.5 kN | C0r: 69.5 kN
NK40/20R+IR35x40x20 d: 35 mm | D: 50 mm | C: 20 mm | Cr: 26.4 kN | C0r: 47 kN
NK40/30R+IR35x40x30 d: 35 mm | D: 50 mm | C: 30 mm | Cr: 38.5 kN | C0r: 76 kN
NK43/20R+IR38x43x20 d: 38 mm | D: 53 mm | C: 20 mm | Cr: 27.5 kN | C0r: 51 kN
NK43/30R+IR38x43x30 d: 38 mm | D: 53 mm | C: 30 mm | Cr: 40 kN | C0r: 82 kN
NK45/20R+IR40x45x20 d: 40 mm | D: 55 mm | C: 20 mm | Cr: 28 kN | C0r: 52.5 kN
NK45/30R+IR40x45x30 d: 40 mm | D: 55 mm | C: 30 mm | Cr: 41 kN | C0r: 85.5 kN
NK47/20RCT+IR42x47x20 d: 42 mm | D: 57 mm | C: 20 mm | Cr: 28.8 kN | C0r: 55.5 kN
NK47/30R+IR42x47x30 d: 42 mm | D: 57 mm | C: 30 mm | Cr: 42.5 kN | C0r: 91.5 kN
NK50/25RCT+IR45x50x25 d: 45 mm | D: 62 mm | C: 25 mm | Cr: 38.5 kN | C0r: 74.5 kN
NK50/35R+IR45x50x35 d: 45 mm | D: 62 mm | C: 35 mm | Cr: 51 kN | C0r: 106 kN
NK55/25R+IR50x55x25 d: 50 mm | D: 68 mm | C: 25 mm | Cr: 41 kN | C0r: 82 kN
NK55/35R+IR50x55x35 d: 50 mm | D: 68 mm | C: 35 mm | Cr: 54 kN | C0r: 118 kN
NK60/25R+IR55x60x25 d: 55 mm | D: 72 mm | C: 25 mm | Cr: 41 kN | C0r: 85 kN
NK60/35R+IR55x60x35 d: 55 mm | D: 72 mm | C: 35 mm | Cr: 57 kN | C0r: 130 kN
NK68/25R+IR60x68x25 d: 60 mm | D: 82 mm | C: 25 mm | Cr: 44.5 kN | C0r: 89 kN
NK68/35R+IR60x68x35 d: 60 mm | D: 82 mm | C: 35 mm | Cr: 63 kN | C0r: 139 kN
NK73/25R+IR65x73x25 d: 65 mm | D: 90 mm | C: 25 mm | Cr: 54 kN | C0r: 100 kN
NK73/35R+IR65x73x35 d: 65 mm | D: 90 mm | C: 35 mm | Cr: 76.5 kN | C0r: 156 kN
NK80/25R+IR70x80x25 d: 70 mm | D: 95 mm | C: 25 mm | Cr: 57 kN | C0r: 119 kN
NK80/35R+IR70x80x35 d: 70 mm | D: 95 mm | C: 35 mm | Cr: 79.5 kN | C0r: 184 kN
NK85/25R+IR75x85x25 d: 75 mm | D: 105 mm | C: 25 mm | Cr: 70.5 kN | C0r: 123 kN
NK85/35R+IR75x85x35 d: 75 mm | D: 105 mm | C: 35 mm | Cr: 100 kN | C0r: 193 kN
NK90/25R+IR80x90x25 d: 80 mm | D: 110 mm | C: 25 mm | Cr: 71.5 kN | C0r: 128 kN
NK90/35R+IR80x90x35 d: 80 mm | D: 110 mm | C: 35 mm | Cr: 104 kN | C0r: 208 kN
NK95/26R+IR85x95x26 d: 85 mm | D: 115 mm | C: 26 mm | Cr: 74.5 kN | C0r: 137 kN
NK95/36R+IR85x95x36 d: 85 mm | D: 115 mm | C: 36 mm | Cr: 108 kN | C0r: 223 kN
NK100/26R+IR90x100x26 d: 90 mm | D: 120 mm | C: 26 mm | Cr: 73.5 kN | C0r: 137 kN
NK100/36R+IR90x100x36 d: 90 mm | D: 120 mm | C: 36 mm | Cr: 107 kN | C0r: 223 kN
NK105/26R+IR95x105x26 d: 95 mm | D: 125 mm | C: 26 mm | Cr: 76.5 kN | C0r: 147 kN
NK105/36R+IR95x105x36 d: 95 mm | D: 125 mm | C: 36 mm | Cr: 111 kN | C0r: 238 kN
NK110/30R+IR100x110x30 d: 100 mm | D: 130 mm | C: 30 mm | Cr: 97.5 kN | C0r: 204 kN
NK110/40R+IR100x110x40 d: 100 mm | D: 130 mm | C: 40 mm | Cr: 129 kN | C0r: 292 kN
NK120/40+IR110x120x40 d: 110 mm | D: 140 mm | C: 40 mm | Cr: 113 kN | C0r: 268 kN
NK130/40+IR120x130x40 d: 120 mm | D: 150 mm | C: 40 mm | Cr: 116 kN | C0r: 283 kN
NK145/32+IR130x145x32 d: 130 mm | D: 170 mm | C: 32 mm | Cr: 111 kN | C0r: 238 kN
NK145/42+IR130x145x42 d: 130 mm | D: 170 mm | C: 42 mm | Cr: 153 kN | C0r: 360 kN
NK155/32+IR140x155x32 d: 140 mm | D: 180 mm | C: 32 mm | Cr: 114 kN | C0r: 252 kN
NK155/42+IR140x155x42 d: 140 mm | D: 180 mm | C: 42 mm | Cr: 156 kN | C0r: 380 kN
NK165/32+IR150x165x32 d: 150 mm | D: 190 mm | C: 32 mm | Cr: 117 kN | C0r: 265 kN
NK165/42+IR150x165x42 d: 150 mm | D: 190 mm | C: 42 mm | Cr: 160 kN | C0r: 400 kN
Needle Roller BearingsNTN
68 product codes available in this family
Sourced direct from KoreaExport-ready supplyCompetitive pricing
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NTN NK+IR Machined-Ring Needle Roller Bearings, with Inner Ring

Brand NTN·Needle Roller Bearings

Available part numbers (68)

NK8/12T2+IR5x8x12, NK8/16T2+IR5x8x16, NK9/12T2+IR6x9x12, NK9/16T2+IR6x9x16, NK10/12T2+IR7x10x12, 8E-NK10/16CT+IR7x10x16, NK12/12+IR9x12x12, NK12/16+IR9x12x16, NK14/16R+IR10x14x16, NK14/20R+IR10x14x20 + 58 more — see full table ↓

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Send the NTN part numbers and quantities through our RFQ form or to info@prosourcemro.com. We confirm price, availability and lead time within 1 business day — no account needed.

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Product codes & specifications
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Product codeSpec
NK8/12T2+IR5x8x12d: 5 mm | D: 15 mm | C: 12 mm | Cr: 4 kN | C0r: 4.1 kN
NK8/16T2+IR5x8x16d: 5 mm | D: 15 mm | C: 16 mm | Cr: 4.85 kN | C0r: 5.2 kN
NK9/12T2+IR6x9x12d: 6 mm | D: 16 mm | C: 12 mm | Cr: 4.55 kN | C0r: 5 kN
NK9/16T2+IR6x9x16d: 6 mm | D: 16 mm | C: 16 mm | Cr: 5.5 kN | C0r: 6.4 kN
NK10/12T2+IR7x10x12d: 7 mm | D: 17 mm | C: 12 mm | Cr: 4.55 kN | C0r: 5.1 kN
8E-NK10/16CT+IR7x10x16d: 7 mm | D: 17 mm | C: 16 mm | Cr: 5.45 kN | C0r: 6.45 kN
NK12/12+IR9x12x12d: 9 mm | D: 19 mm | C: 12 mm | Cr: 5 kN | C0r: 6.1 kN
NK12/16+IR9x12x16d: 9 mm | D: 19 mm | C: 16 mm | Cr: 6 kN | C0r: 7.7 kN
NK14/16R+IR10x14x16d: 10 mm | D: 22 mm | C: 16 mm | Cr: 10.3 kN | C0r: 11.5 kN
NK14/20R+IR10x14x20d: 10 mm | D: 22 mm | C: 20 mm | Cr: 13 kN | C0r: 15.6 kN
NK16/16R+IR12x16x16d: 12 mm | D: 24 mm | C: 16 mm | Cr: 12.2 kN | C0r: 14.9 kN
NK16/20R+IR12x16x20d: 12 mm | D: 24 mm | C: 20 mm | Cr: 14.6 kN | C0r: 18.8 kN
NK19/16R+IR15x19x16d: 15 mm | D: 27 mm | C: 16 mm | Cr: 13.3 kN | C0r: 17.4 kN
NK19/20R+IR15x19x20d: 15 mm | D: 27 mm | C: 20 mm | Cr: 16 kN | C0r: 22.2 kN
NK21/16R+IR17x21x16d: 17 mm | D: 29 mm | C: 16 mm | Cr: 13.7 kN | C0r: 18.7 kN
NK21/20R+IR17x21x20d: 17 mm | D: 29 mm | C: 20 mm | Cr: 17.4 kN | C0r: 25.4 kN
NK24/16R+IR20x24x16d: 20 mm | D: 32 mm | C: 16 mm | Cr: 15.2 kN | C0r: 22.3 kN
NK24/20R+IR20x24x20d: 20 mm | D: 32 mm | C: 20 mm | Cr: 18.6 kN | C0r: 28.8 kN
NK26/16R+IR22x26x16d: 22 mm | D: 34 mm | C: 16 mm | Cr: 15.6 kN | C0r: 23.6 kN
NK26/20R+IR22x26x20d: 22 mm | D: 34 mm | C: 20 mm | Cr: 19.1 kN | C0r: 30.5 kN
NK29/20R+IR25x29x20d: 25 mm | D: 38 mm | C: 20 mm | Cr: 22.2 kN | C0r: 34 kN
NK29/30R+IR25x29x30d: 25 mm | D: 38 mm | C: 30 mm | Cr: 27.5 kN | C0r: 50.5 kN
NK32/20R+IR28x32x20d: 28 mm | D: 42 mm | C: 20 mm | Cr: 23.5 kN | C0r: 37.5 kN
NK32/30R+IR28x32x30d: 28 mm | D: 42 mm | C: 30 mm | Cr: 34 kN | C0r: 60.5 kN
NK35/20RCT+IR30x35x20d: 30 mm | D: 45 mm | C: 20 mm | Cr: 24.8 kN | C0r: 41.5 kN
NK35/30R+IR30x35x30d: 30 mm | D: 45 mm | C: 30 mm | Cr: 36 kN | C0r: 66.5 kN
NK37/20R+IR32x37x20d: 32 mm | D: 47 mm | C: 20 mm | Cr: 25.3 kN | C0r: 43.5 kN
NK37/30R+IR32x37x30d: 32 mm | D: 47 mm | C: 30 mm | Cr: 36.5 kN | C0r: 69.5 kN
NK40/20R+IR35x40x20d: 35 mm | D: 50 mm | C: 20 mm | Cr: 26.4 kN | C0r: 47 kN
NK40/30R+IR35x40x30d: 35 mm | D: 50 mm | C: 30 mm | Cr: 38.5 kN | C0r: 76 kN
NK43/20R+IR38x43x20d: 38 mm | D: 53 mm | C: 20 mm | Cr: 27.5 kN | C0r: 51 kN
NK43/30R+IR38x43x30d: 38 mm | D: 53 mm | C: 30 mm | Cr: 40 kN | C0r: 82 kN
NK45/20R+IR40x45x20d: 40 mm | D: 55 mm | C: 20 mm | Cr: 28 kN | C0r: 52.5 kN
NK45/30R+IR40x45x30d: 40 mm | D: 55 mm | C: 30 mm | Cr: 41 kN | C0r: 85.5 kN
NK47/20RCT+IR42x47x20d: 42 mm | D: 57 mm | C: 20 mm | Cr: 28.8 kN | C0r: 55.5 kN
NK47/30R+IR42x47x30d: 42 mm | D: 57 mm | C: 30 mm | Cr: 42.5 kN | C0r: 91.5 kN
NK50/25RCT+IR45x50x25d: 45 mm | D: 62 mm | C: 25 mm | Cr: 38.5 kN | C0r: 74.5 kN
NK50/35R+IR45x50x35d: 45 mm | D: 62 mm | C: 35 mm | Cr: 51 kN | C0r: 106 kN
NK55/25R+IR50x55x25d: 50 mm | D: 68 mm | C: 25 mm | Cr: 41 kN | C0r: 82 kN
NK55/35R+IR50x55x35d: 50 mm | D: 68 mm | C: 35 mm | Cr: 54 kN | C0r: 118 kN
NK60/25R+IR55x60x25d: 55 mm | D: 72 mm | C: 25 mm | Cr: 41 kN | C0r: 85 kN
NK60/35R+IR55x60x35d: 55 mm | D: 72 mm | C: 35 mm | Cr: 57 kN | C0r: 130 kN
NK68/25R+IR60x68x25d: 60 mm | D: 82 mm | C: 25 mm | Cr: 44.5 kN | C0r: 89 kN
NK68/35R+IR60x68x35d: 60 mm | D: 82 mm | C: 35 mm | Cr: 63 kN | C0r: 139 kN
NK73/25R+IR65x73x25d: 65 mm | D: 90 mm | C: 25 mm | Cr: 54 kN | C0r: 100 kN
NK73/35R+IR65x73x35d: 65 mm | D: 90 mm | C: 35 mm | Cr: 76.5 kN | C0r: 156 kN
NK80/25R+IR70x80x25d: 70 mm | D: 95 mm | C: 25 mm | Cr: 57 kN | C0r: 119 kN
NK80/35R+IR70x80x35d: 70 mm | D: 95 mm | C: 35 mm | Cr: 79.5 kN | C0r: 184 kN
NK85/25R+IR75x85x25d: 75 mm | D: 105 mm | C: 25 mm | Cr: 70.5 kN | C0r: 123 kN
NK85/35R+IR75x85x35d: 75 mm | D: 105 mm | C: 35 mm | Cr: 100 kN | C0r: 193 kN
NK90/25R+IR80x90x25d: 80 mm | D: 110 mm | C: 25 mm | Cr: 71.5 kN | C0r: 128 kN
NK90/35R+IR80x90x35d: 80 mm | D: 110 mm | C: 35 mm | Cr: 104 kN | C0r: 208 kN
NK95/26R+IR85x95x26d: 85 mm | D: 115 mm | C: 26 mm | Cr: 74.5 kN | C0r: 137 kN
NK95/36R+IR85x95x36d: 85 mm | D: 115 mm | C: 36 mm | Cr: 108 kN | C0r: 223 kN
NK100/26R+IR90x100x26d: 90 mm | D: 120 mm | C: 26 mm | Cr: 73.5 kN | C0r: 137 kN
NK100/36R+IR90x100x36d: 90 mm | D: 120 mm | C: 36 mm | Cr: 107 kN | C0r: 223 kN
NK105/26R+IR95x105x26d: 95 mm | D: 125 mm | C: 26 mm | Cr: 76.5 kN | C0r: 147 kN
NK105/36R+IR95x105x36d: 95 mm | D: 125 mm | C: 36 mm | Cr: 111 kN | C0r: 238 kN
NK110/30R+IR100x110x30d: 100 mm | D: 130 mm | C: 30 mm | Cr: 97.5 kN | C0r: 204 kN
NK110/40R+IR100x110x40d: 100 mm | D: 130 mm | C: 40 mm | Cr: 129 kN | C0r: 292 kN
NK120/40+IR110x120x40d: 110 mm | D: 140 mm | C: 40 mm | Cr: 113 kN | C0r: 268 kN
NK130/40+IR120x130x40d: 120 mm | D: 150 mm | C: 40 mm | Cr: 116 kN | C0r: 283 kN
NK145/32+IR130x145x32d: 130 mm | D: 170 mm | C: 32 mm | Cr: 111 kN | C0r: 238 kN
NK145/42+IR130x145x42d: 130 mm | D: 170 mm | C: 42 mm | Cr: 153 kN | C0r: 360 kN
NK155/32+IR140x155x32d: 140 mm | D: 180 mm | C: 32 mm | Cr: 114 kN | C0r: 252 kN
NK155/42+IR140x155x42d: 140 mm | D: 180 mm | C: 42 mm | Cr: 156 kN | C0r: 380 kN
NK165/32+IR150x165x32d: 150 mm | D: 190 mm | C: 32 mm | Cr: 117 kN | C0r: 265 kN
NK165/42+IR150x165x42d: 150 mm | D: 190 mm | C: 42 mm | Cr: 160 kN | C0r: 400 kN

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