• NACHI UC 300 Insert Ball Bearings (Set Screw, Metric & Inch)
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NACHI UC 300 Insert Ball Bearings (Set Screw, Metric & Inch)

NACHI UC 300 Insert Ball Bearings (Set Screw, Metric & Inch)

NACHI UC 300 medium duty insert ball bearings (diameter series 3) with set-screw locking, shaft diameters 25-140 mm, 7/8 in to 4 in.

Key features

  • Replacement bearing for NACHI mounted units
  • Spherical outside diameter for self-alignment in the unit housing
  • Shaft locking by set screw
  • Metric sizes with load ratings in kgf; inch sizes with dimensions in inches and load ratings in lbf

Specifications

Brand NACHI
Series UC 300
Bearing type Ball bearing for units (insert bearing)
Shaft locking Set screw
Shaft range 25-140 mm, 7/8 in to 4 in
Bi Inner ring width
Source NACHI Ball Bearing Units catalogue, p. 47
UC305 Shaft: 25 mm | D: 62 mm | Bi: 38 mm | C: 2170 kgf | C0: 1090 kgf
UC306 Shaft: 30 mm | D: 72 mm | Bi: 43 mm | C: 2730 kgf | C0: 1420 kgf
UC307 Shaft: 35 mm | D: 80 mm | Bi: 48 mm | C: 3400 kgf | C0: 1820 kgf
UC308 Shaft: 40 mm | D: 90 mm | Bi: 52 mm | C: 4150 kgf | C0: 2270 kgf
UC309 Shaft: 45 mm | D: 100 mm | Bi: 57 mm | C: 5250 kgf | C0: 3050 kgf
UC310 Shaft: 50 mm | D: 110 mm | Bi: 61 mm | C: 6300 kgf | C0: 3650 kgf
UC311 Shaft: 55 mm | D: 120 mm | Bi: 66 mm | C: 7300 kgf | C0: 4250 kgf
UC312 Shaft: 60 mm | D: 130 mm | Bi: 71 mm | C: 8300 kgf | C0: 4900 kgf
UC313 Shaft: 65 mm | D: 140 mm | Bi: 75 mm | C: 9450 kgf | C0: 5650 kgf
UC314 Shaft: 70 mm | D: 150 mm | Bi: 78 mm | C: 10600 kgf | C0: 6450 kgf
UC315 Shaft: 75 mm | D: 160 mm | Bi: 82 mm | C: 11600 kgf | C0: 7200 kgf
UC316 Shaft: 80 mm | D: 170 mm | Bi: 86 mm | C: 12500 kgf | C0: 8150 kgf
UC317 Shaft: 85 mm | D: 180 mm | Bi: 96 mm | C: 13500 kgf | C0: 9100 kgf
UC318 Shaft: 90 mm | D: 190 mm | Bi: 96 mm | C: 14600 kgf | C0: 10100 kgf
UC319 Shaft: 95 mm | D: 200 mm | Bi: 103 mm | C: 15600 kgf | C0: 11100 kgf
UC320 Shaft: 100 mm | D: 215 mm | Bi: 108 mm | C: 17700 kgf | C0: 13300 kgf
UC321 Shaft: 105 mm | D: 225 mm | Bi: 112 mm | C: 18700 kgf | C0: 14500 kgf
UC322 Shaft: 110 mm | D: 240 mm | Bi: 117 mm | C: 20900 kgf | C0: 17000 kgf
UC324 Shaft: 120 mm | D: 260 mm | Bi: 126 mm | C: 21100 kgf | C0: 17000 kgf
UC326 Shaft: 130 mm | D: 280 mm | Bi: 135 mm | C: 23400 kgf | C0: 19600 kgf
UC328 Shaft: 140 mm | D: 300 mm | Bi: 145 mm | C: 26000 kgf | C0: 22400 kgf
UC305-14 Shaft: 7/8 in | D: 2.4409 in | Bi: 1.496 in | C: 4780 lbf | C0: 2400 lbf
UC305-16 Shaft: 1 in | D: 2.4409 in | Bi: 1.496 in | C: 4780 lbf | C0: 2400 lbf
UC306-18 Shaft: 1-1/8 in | D: 2.8346 in | Bi: 1.693 in | C: 6020 lbf | C0: 3130 lbf
UC307-20 Shaft: 1-1/4 in | D: 3.1496 in | Bi: 1.890 in | C: 7500 lbf | C0: 4010 lbf
UC307-22 Shaft: 1-3/8 in | D: 3.1496 in | Bi: 1.890 in | C: 7500 lbf | C0: 4010 lbf
UC308-24 Shaft: 1-1/2 in | D: 3.5433 in | Bi: 2.047 in | C: 9150 lbf | C0: 5000 lbf
UC309-26 Shaft: 1-5/8 in | D: 3.9370 in | Bi: 2.244 in | C: 11570 lbf | C0: 6720 lbf
UC309-28 Shaft: 1-3/4 in | D: 3.9370 in | Bi: 2.244 in | C: 11570 lbf | C0: 6720 lbf
UC310-30 Shaft: 1-7/8 in | D: 4.3307 in | Bi: 2.402 in | C: 13900 lbf | C0: 8050 lbf
UC311-32 Shaft: 2 in | D: 4.7244 in | Bi: 2.598 in | C: 16100 lbf | C0: 9370 lbf
UC311-34 Shaft: 2-1/8 in | D: 4.7244 in | Bi: 2.598 in | C: 16100 lbf | C0: 9370 lbf
UC312-36 Shaft: 2-1/4 in | D: 5.1181 in | Bi: 2.795 in | C: 18300 lbf | C0: 10800 lbf
UC312-38 Shaft: 2-3/8 in | D: 5.1181 in | Bi: 2.795 in | C: 18300 lbf | C0: 10800 lbf
UC313-40 Shaft: 2-1/2 in | D: 5.5118 in | Bi: 2.953 in | C: 20800 lbf | C0: 12500 lbf
UC314-44 Shaft: 2-3/4 in | D: 5.9055 in | Bi: 3.071 in | C: 23400 lbf | C0: 14200 lbf
UC315-48 Shaft: 3 in | D: 6.2992 in | Bi: 3.228 in | C: 25600 lbf | C0: 15900 lbf
UC316-50 Shaft: 3-1/8 in | D: 6.6929 in | Bi: 3.386 in | C: 27600 lbf | C0: 18000 lbf
UC317-52 Shaft: 3-1/4 in | D: 7.0866 in | Bi: 3.780 in | C: 29800 lbf | C0: 20100 lbf
UC318-56 Shaft: 3-1/2 in | D: 7.4803 in | Bi: 3.780 in | C: 32200 lbf | C0: 22300 lbf
UC319-60 Shaft: 3-3/4 in | D: 7.8740 in | Bi: 4.055 in | C: 34400 lbf | C0: 24500 lbf
UC320-64 Shaft: 4 in | D: 8.4646 in | Bi: 4.252 in | C: 39000 lbf | C0: 29300 lbf
Insert BearingsNACHI
42 product codes available in this family
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NACHI UC 300 Insert Ball Bearings (Set Screw, Metric & Inch)

Brand NACHI·Insert Bearings

Available part numbers (42)

UC305, UC306, UC307, UC308, UC309, UC310, UC311, UC312, UC313, UC314 + 32 more — see full table ↓

How to order

Send the NACHI 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
UC305Shaft: 25 mm | D: 62 mm | Bi: 38 mm | C: 2170 kgf | C0: 1090 kgf
UC306Shaft: 30 mm | D: 72 mm | Bi: 43 mm | C: 2730 kgf | C0: 1420 kgf
UC307Shaft: 35 mm | D: 80 mm | Bi: 48 mm | C: 3400 kgf | C0: 1820 kgf
UC308Shaft: 40 mm | D: 90 mm | Bi: 52 mm | C: 4150 kgf | C0: 2270 kgf
UC309Shaft: 45 mm | D: 100 mm | Bi: 57 mm | C: 5250 kgf | C0: 3050 kgf
UC310Shaft: 50 mm | D: 110 mm | Bi: 61 mm | C: 6300 kgf | C0: 3650 kgf
UC311Shaft: 55 mm | D: 120 mm | Bi: 66 mm | C: 7300 kgf | C0: 4250 kgf
UC312Shaft: 60 mm | D: 130 mm | Bi: 71 mm | C: 8300 kgf | C0: 4900 kgf
UC313Shaft: 65 mm | D: 140 mm | Bi: 75 mm | C: 9450 kgf | C0: 5650 kgf
UC314Shaft: 70 mm | D: 150 mm | Bi: 78 mm | C: 10600 kgf | C0: 6450 kgf
UC315Shaft: 75 mm | D: 160 mm | Bi: 82 mm | C: 11600 kgf | C0: 7200 kgf
UC316Shaft: 80 mm | D: 170 mm | Bi: 86 mm | C: 12500 kgf | C0: 8150 kgf
UC317Shaft: 85 mm | D: 180 mm | Bi: 96 mm | C: 13500 kgf | C0: 9100 kgf
UC318Shaft: 90 mm | D: 190 mm | Bi: 96 mm | C: 14600 kgf | C0: 10100 kgf
UC319Shaft: 95 mm | D: 200 mm | Bi: 103 mm | C: 15600 kgf | C0: 11100 kgf
UC320Shaft: 100 mm | D: 215 mm | Bi: 108 mm | C: 17700 kgf | C0: 13300 kgf
UC321Shaft: 105 mm | D: 225 mm | Bi: 112 mm | C: 18700 kgf | C0: 14500 kgf
UC322Shaft: 110 mm | D: 240 mm | Bi: 117 mm | C: 20900 kgf | C0: 17000 kgf
UC324Shaft: 120 mm | D: 260 mm | Bi: 126 mm | C: 21100 kgf | C0: 17000 kgf
UC326Shaft: 130 mm | D: 280 mm | Bi: 135 mm | C: 23400 kgf | C0: 19600 kgf
UC328Shaft: 140 mm | D: 300 mm | Bi: 145 mm | C: 26000 kgf | C0: 22400 kgf
UC305-14Shaft: 7/8 in | D: 2.4409 in | Bi: 1.496 in | C: 4780 lbf | C0: 2400 lbf
UC305-16Shaft: 1 in | D: 2.4409 in | Bi: 1.496 in | C: 4780 lbf | C0: 2400 lbf
UC306-18Shaft: 1-1/8 in | D: 2.8346 in | Bi: 1.693 in | C: 6020 lbf | C0: 3130 lbf
UC307-20Shaft: 1-1/4 in | D: 3.1496 in | Bi: 1.890 in | C: 7500 lbf | C0: 4010 lbf
UC307-22Shaft: 1-3/8 in | D: 3.1496 in | Bi: 1.890 in | C: 7500 lbf | C0: 4010 lbf
UC308-24Shaft: 1-1/2 in | D: 3.5433 in | Bi: 2.047 in | C: 9150 lbf | C0: 5000 lbf
UC309-26Shaft: 1-5/8 in | D: 3.9370 in | Bi: 2.244 in | C: 11570 lbf | C0: 6720 lbf
UC309-28Shaft: 1-3/4 in | D: 3.9370 in | Bi: 2.244 in | C: 11570 lbf | C0: 6720 lbf
UC310-30Shaft: 1-7/8 in | D: 4.3307 in | Bi: 2.402 in | C: 13900 lbf | C0: 8050 lbf
UC311-32Shaft: 2 in | D: 4.7244 in | Bi: 2.598 in | C: 16100 lbf | C0: 9370 lbf
UC311-34Shaft: 2-1/8 in | D: 4.7244 in | Bi: 2.598 in | C: 16100 lbf | C0: 9370 lbf
UC312-36Shaft: 2-1/4 in | D: 5.1181 in | Bi: 2.795 in | C: 18300 lbf | C0: 10800 lbf
UC312-38Shaft: 2-3/8 in | D: 5.1181 in | Bi: 2.795 in | C: 18300 lbf | C0: 10800 lbf
UC313-40Shaft: 2-1/2 in | D: 5.5118 in | Bi: 2.953 in | C: 20800 lbf | C0: 12500 lbf
UC314-44Shaft: 2-3/4 in | D: 5.9055 in | Bi: 3.071 in | C: 23400 lbf | C0: 14200 lbf
UC315-48Shaft: 3 in | D: 6.2992 in | Bi: 3.228 in | C: 25600 lbf | C0: 15900 lbf
UC316-50Shaft: 3-1/8 in | D: 6.6929 in | Bi: 3.386 in | C: 27600 lbf | C0: 18000 lbf
UC317-52Shaft: 3-1/4 in | D: 7.0866 in | Bi: 3.780 in | C: 29800 lbf | C0: 20100 lbf
UC318-56Shaft: 3-1/2 in | D: 7.4803 in | Bi: 3.780 in | C: 32200 lbf | C0: 22300 lbf
UC319-60Shaft: 3-3/4 in | D: 7.8740 in | Bi: 4.055 in | C: 34400 lbf | C0: 24500 lbf
UC320-64Shaft: 4 in | D: 8.4646 in | Bi: 4.252 in | C: 39000 lbf | C0: 29300 lbf

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