• KOYO IR Inner Rings for Inch Heavy-Duty Needle Roller Bearings
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KOYO IR Inner Rings for Inch Heavy-Duty Needle Roller Bearings

KOYO IR Inner Rings for Inch Heavy-Duty Needle Roller Bearings

IR inner rings for inch-series HJ heavy-duty needle roller bearings, hardened and ground.

Key features

  • Hardened and ground raceway
  • Inch nominal sizes (shown in mm)
  • Matched to HJ bearings
  • Use when shaft cannot be hardened

Specifications

Product type Needle bearing inner ring
Series IR
Dimension system Inch (values in mm)
Source KOYO Needle Roller Bearings catalogue, p. B-4-50 to B-4-53
IR-061012 d: 9.525 mm | F: 15.875 mm | B: 19.05 mm | r: 0.64 mm | Mass: 0.018 kg
IR-081212 d: 12.700 mm | F: 19.050 mm | B: 19.05 mm | r: 1.02 mm | Mass: 0.023 kg
IR-081216 d: 12.700 mm | F: 19.050 mm | B: 25.40 mm | r: 1.02 mm | Mass: 0.032 kg
IR-101412 d: 15.875 mm | F: 22.225 mm | B: 19.05 mm | r: 1.02 mm | Mass: 0.027 kg
IR-101416 d: 15.875 mm | F: 22.225 mm | B: 25.40 mm | r: 1.02 mm | Mass: 0.036 kg
IR-111412 d: 17.463 mm | F: 22.225 mm | B: 19.05 mm | r: 1.02 mm | Mass: 0.023 kg
IR-121612 d: 19.050 mm | F: 25.400 mm | B: 19.05 mm | r: 1.02 mm | Mass: 0.032 kg
IR-121616 d: 19.050 mm | F: 25.400 mm | B: 25.40 mm | r: 1.02 mm | Mass: 0.041 kg
IR-131616 d: 20.638 mm | F: 25.400 mm | B: 25.40 mm | r: 1.02 mm | Mass: 0.032 kg
IR-141816 d: 22.225 mm | F: 28.575 mm | B: 25.40 mm | r: 1.02 mm | Mass: 0.050 kg
IR-141820 d: 22.225 mm | F: 28.575 mm | B: 31.75 mm | r: 1.02 mm | Mass: 0.059 kg
IR-151816 d: 23.813 mm | F: 28.575 mm | B: 25.40 mm | r: 1.02 mm | Mass: 0.036 kg
IR-151820 d: 23.813 mm | F: 28.575 mm | B: 31.75 mm | r: 1.02 mm | Mass: 0.045 kg
IR-162016 d: 25.400 mm | F: 31.750 mm | B: 25.40 mm | r: 1.02 mm | Mass: 0.054 kg
IR-162020 d: 25.400 mm | F: 31.750 mm | B: 31.75 mm | r: 1.02 mm | Mass: 0.068 kg
IR-182216 d: 28.575 mm | F: 34.925 mm | B: 25.40 mm | r: 1.02 mm | Mass: 0.059 kg
IR-182220 d: 28.575 mm | F: 34.925 mm | B: 31.75 mm | r: 1.02 mm | Mass: 0.077 kg
IR-192420 d: 30.163 mm | F: 38.100 mm | B: 31.75 mm | r: 1.52 mm | Mass: 0.100 kg
IR-202416 d: 31.750 mm | F: 38.100 mm | B: 25.40 mm | r: 1.52 mm | Mass: 0.068 kg
IR-202420 d: 31.750 mm | F: 38.100 mm | B: 31.75 mm | r: 1.52 mm | Mass: 0.082 kg
IR-212616 d: 33.338 mm | F: 41.275 mm | B: 25.40 mm | r: 1.52 mm | Mass: 0.086 kg
IR-212620 d: 33.338 mm | F: 41.275 mm | B: 31.75 mm | r: 1.52 mm | Mass: 0.109 kg
IR-222620 d: 34.925 mm | F: 41.275 mm | B: 31.75 mm | r: 1.52 mm | Mass: 0.091 kg
IR-222820 d: 34.925 mm | F: 44.450 mm | B: 31.75 mm | r: 1.52 mm | Mass: 0.141 kg
IR-232816 d: 36.513 mm | F: 44.450 mm | B: 25.40 mm | r: 1.52 mm | Mass: 0.095 kg
IR-232820 d: 36.513 mm | F: 44.450 mm | B: 31.75 mm | r: 1.52 mm | Mass: 0.118 kg
IR-242816 d: 38.100 mm | F: 44.450 mm | B: 25.40 mm | r: 1.52 mm | Mass: 0.077 kg
IR-242820 d: 38.100 mm | F: 44.450 mm | B: 31.75 mm | r: 1.52 mm | Mass: 0.095 kg
IR-243220 d: 38.100 mm | F: 50.800 mm | B: 31.75 mm | r: 1.52 mm | Mass: 0.209 kg
IR-253020 d: 39.688 mm | F: 47.625 mm | B: 31.75 mm | r: 1.52 mm | Mass: 0.127 kg
IR-253220 d: 39.688 mm | F: 50.800 mm | B: 31.75 mm | r: 1.52 mm | Mass: 0.186 kg
IR-263220 d: 41.275 mm | F: 50.800 mm | B: 31.75 mm | r: 1.52 mm | Mass: 0.163 kg
IR-273216 d: 42.863 mm | F: 50.800 mm | B: 25.40 mm | r: 1.52 mm | Mass: 0.109 kg
IR-273220 d: 42.863 mm | F: 50.800 mm | B: 31.75 mm | r: 1.52 mm | Mass: 0.136 kg
IR-283624 d: 44.450 mm | F: 57.150 mm | B: 38.10 mm | r: 1.52 mm | Mass: 0.286 kg
IR-283628 d: 44.450 mm | F: 57.150 mm | B: 44.45 mm | r: 1.52 mm | Mass: 0.336 kg
IR-314024 d: 49.213 mm | F: 63.500 mm | B: 38.10 mm | r: 2.03 mm | Mass: 0.358 kg
IR-314028 d: 49.213 mm | F: 63.500 mm | B: 44.45 mm | r: 2.03 mm | Mass: 0.417 kg
IR-324024 d: 50.800 mm | F: 63.500 mm | B: 38.10 mm | r: 2.03 mm | Mass: 0.322 kg
IR-324028 d: 50.800 mm | F: 63.500 mm | B: 44.45 mm | r: 2.03 mm | Mass: 0.376 kg
IR-354428 d: 55.563 mm | F: 69.850 mm | B: 44.45 mm | r: 2.03 mm | Mass: 0.467 kg
IR-364424 d: 57.150 mm | F: 69.850 mm | B: 38.10 mm | r: 2.03 mm | Mass: 0.358 kg
IR-364428 d: 57.150 mm | F: 69.850 mm | B: 44.45 mm | r: 2.03 mm | Mass: 0.417 kg
IR-384828 d: 60.325 mm | F: 76.200 mm | B: 44.45 mm | r: 2.03 mm | Mass: 0.562 kg
IR-404824 d: 63.500 mm | F: 76.200 mm | B: 38.10 mm | r: 2.03 mm | Mass: 0.395 kg
IR-404828 d: 63.500 mm | F: 76.200 mm | B: 44.45 mm | r: 2.03 mm | Mass: 0.463 kg
IR-445228 d: 69.850 mm | F: 82.550 mm | B: 44.45 mm | r: 2.03 mm | Mass: 0.503 kg
IR-445232 d: 69.850 mm | F: 82.550 mm | B: 50.80 mm | r: 2.03 mm | Mass: 0.576 kg
IR-475632 d: 74.613 mm | F: 88.900 mm | B: 50.80 mm | r: 2.03 mm | Mass: 0.694 kg
IR-485632 d: 76.200 mm | F: 88.900 mm | B: 50.80 mm | r: 2.03 mm | Mass: 0.621 kg
Needle Roller BearingsKOYO
50 product codes available in this family
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KOYO IR Inner Rings for Inch Heavy-Duty Needle Roller Bearings

Brand KOYO·Needle Roller Bearings

Available part numbers (50)

IR-061012, IR-081212, IR-081216, IR-101412, IR-101416, IR-111412, IR-121612, IR-121616, IR-131616, IR-141816 + 40 more — see full table ↓

How to order

Send the KOYO 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
IR-061012d: 9.525 mm | F: 15.875 mm | B: 19.05 mm | r: 0.64 mm | Mass: 0.018 kg
IR-081212d: 12.700 mm | F: 19.050 mm | B: 19.05 mm | r: 1.02 mm | Mass: 0.023 kg
IR-081216d: 12.700 mm | F: 19.050 mm | B: 25.40 mm | r: 1.02 mm | Mass: 0.032 kg
IR-101412d: 15.875 mm | F: 22.225 mm | B: 19.05 mm | r: 1.02 mm | Mass: 0.027 kg
IR-101416d: 15.875 mm | F: 22.225 mm | B: 25.40 mm | r: 1.02 mm | Mass: 0.036 kg
IR-111412d: 17.463 mm | F: 22.225 mm | B: 19.05 mm | r: 1.02 mm | Mass: 0.023 kg
IR-121612d: 19.050 mm | F: 25.400 mm | B: 19.05 mm | r: 1.02 mm | Mass: 0.032 kg
IR-121616d: 19.050 mm | F: 25.400 mm | B: 25.40 mm | r: 1.02 mm | Mass: 0.041 kg
IR-131616d: 20.638 mm | F: 25.400 mm | B: 25.40 mm | r: 1.02 mm | Mass: 0.032 kg
IR-141816d: 22.225 mm | F: 28.575 mm | B: 25.40 mm | r: 1.02 mm | Mass: 0.050 kg
IR-141820d: 22.225 mm | F: 28.575 mm | B: 31.75 mm | r: 1.02 mm | Mass: 0.059 kg
IR-151816d: 23.813 mm | F: 28.575 mm | B: 25.40 mm | r: 1.02 mm | Mass: 0.036 kg
IR-151820d: 23.813 mm | F: 28.575 mm | B: 31.75 mm | r: 1.02 mm | Mass: 0.045 kg
IR-162016d: 25.400 mm | F: 31.750 mm | B: 25.40 mm | r: 1.02 mm | Mass: 0.054 kg
IR-162020d: 25.400 mm | F: 31.750 mm | B: 31.75 mm | r: 1.02 mm | Mass: 0.068 kg
IR-182216d: 28.575 mm | F: 34.925 mm | B: 25.40 mm | r: 1.02 mm | Mass: 0.059 kg
IR-182220d: 28.575 mm | F: 34.925 mm | B: 31.75 mm | r: 1.02 mm | Mass: 0.077 kg
IR-192420d: 30.163 mm | F: 38.100 mm | B: 31.75 mm | r: 1.52 mm | Mass: 0.100 kg
IR-202416d: 31.750 mm | F: 38.100 mm | B: 25.40 mm | r: 1.52 mm | Mass: 0.068 kg
IR-202420d: 31.750 mm | F: 38.100 mm | B: 31.75 mm | r: 1.52 mm | Mass: 0.082 kg
IR-212616d: 33.338 mm | F: 41.275 mm | B: 25.40 mm | r: 1.52 mm | Mass: 0.086 kg
IR-212620d: 33.338 mm | F: 41.275 mm | B: 31.75 mm | r: 1.52 mm | Mass: 0.109 kg
IR-222620d: 34.925 mm | F: 41.275 mm | B: 31.75 mm | r: 1.52 mm | Mass: 0.091 kg
IR-222820d: 34.925 mm | F: 44.450 mm | B: 31.75 mm | r: 1.52 mm | Mass: 0.141 kg
IR-232816d: 36.513 mm | F: 44.450 mm | B: 25.40 mm | r: 1.52 mm | Mass: 0.095 kg
IR-232820d: 36.513 mm | F: 44.450 mm | B: 31.75 mm | r: 1.52 mm | Mass: 0.118 kg
IR-242816d: 38.100 mm | F: 44.450 mm | B: 25.40 mm | r: 1.52 mm | Mass: 0.077 kg
IR-242820d: 38.100 mm | F: 44.450 mm | B: 31.75 mm | r: 1.52 mm | Mass: 0.095 kg
IR-243220d: 38.100 mm | F: 50.800 mm | B: 31.75 mm | r: 1.52 mm | Mass: 0.209 kg
IR-253020d: 39.688 mm | F: 47.625 mm | B: 31.75 mm | r: 1.52 mm | Mass: 0.127 kg
IR-253220d: 39.688 mm | F: 50.800 mm | B: 31.75 mm | r: 1.52 mm | Mass: 0.186 kg
IR-263220d: 41.275 mm | F: 50.800 mm | B: 31.75 mm | r: 1.52 mm | Mass: 0.163 kg
IR-273216d: 42.863 mm | F: 50.800 mm | B: 25.40 mm | r: 1.52 mm | Mass: 0.109 kg
IR-273220d: 42.863 mm | F: 50.800 mm | B: 31.75 mm | r: 1.52 mm | Mass: 0.136 kg
IR-283624d: 44.450 mm | F: 57.150 mm | B: 38.10 mm | r: 1.52 mm | Mass: 0.286 kg
IR-283628d: 44.450 mm | F: 57.150 mm | B: 44.45 mm | r: 1.52 mm | Mass: 0.336 kg
IR-314024d: 49.213 mm | F: 63.500 mm | B: 38.10 mm | r: 2.03 mm | Mass: 0.358 kg
IR-314028d: 49.213 mm | F: 63.500 mm | B: 44.45 mm | r: 2.03 mm | Mass: 0.417 kg
IR-324024d: 50.800 mm | F: 63.500 mm | B: 38.10 mm | r: 2.03 mm | Mass: 0.322 kg
IR-324028d: 50.800 mm | F: 63.500 mm | B: 44.45 mm | r: 2.03 mm | Mass: 0.376 kg
IR-354428d: 55.563 mm | F: 69.850 mm | B: 44.45 mm | r: 2.03 mm | Mass: 0.467 kg
IR-364424d: 57.150 mm | F: 69.850 mm | B: 38.10 mm | r: 2.03 mm | Mass: 0.358 kg
IR-364428d: 57.150 mm | F: 69.850 mm | B: 44.45 mm | r: 2.03 mm | Mass: 0.417 kg
IR-384828d: 60.325 mm | F: 76.200 mm | B: 44.45 mm | r: 2.03 mm | Mass: 0.562 kg
IR-404824d: 63.500 mm | F: 76.200 mm | B: 38.10 mm | r: 2.03 mm | Mass: 0.395 kg
IR-404828d: 63.500 mm | F: 76.200 mm | B: 44.45 mm | r: 2.03 mm | Mass: 0.463 kg
IR-445228d: 69.850 mm | F: 82.550 mm | B: 44.45 mm | r: 2.03 mm | Mass: 0.503 kg
IR-445232d: 69.850 mm | F: 82.550 mm | B: 50.80 mm | r: 2.03 mm | Mass: 0.576 kg
IR-475632d: 74.613 mm | F: 88.900 mm | B: 50.80 mm | r: 2.03 mm | Mass: 0.694 kg
IR-485632d: 76.200 mm | F: 88.900 mm | B: 50.80 mm | r: 2.03 mm | Mass: 0.621 kg

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