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Plastic Flange Bearings


Plastic flange bearings are designed to replace cast and stainless steel flange bearings in applications that are extremely abrasive or are required to conform to USDA and FDA requirements. Our high-quality plastic flange bearings are manufactured from premium virgin UHMW and have a molecular weight of at least 4.2 million for extended wear life and performance. We stock both the 2-bolt flange mounted plastic bearings and the four-bolt bearings. Standard bore sizes range from 1/2" up to 3" inside diameter, these bearings are manufactured to standard bearing dimensions (bolt holes, hole spacing, base height, etc.) so they can directly interchange with common brands, eliminating the need for equipment adjustments and modifications. Flange mounted bearings have excellent holding power and are commonly found in horizontal applications. The standard operating temperature for these bearings is 200°F, however, for high-temp applications, we also produce these bearings in an acetal material capable of operating up to 600°F. Additionally, UHMW plastic flange bearings are self-lubricating due to the properties of the plastic material. For figuring information for new applications refer to our plastic bearing insert page and scroll down to the required data. To get pricing and availability or for additional information contact our customer support team and we will be happy to assist you!

Plastic 2-Bolt Flange Bearing Sizes


Bearing Part #
Bore Sizes
Bolt Size
Dimension (A)
Dimension (B)
Dimension (C)
Dimension (D)
Max Speed (RPM)
Max Radial Load (LBS)
FB-12 1/2" 3/8" 3-7/8" 3" 1" 2" 350 200
FB-916 9/16" 3/8" 3-7/8" 3" 1" 2" 300 216
FB-58 5/8" 3/8" 3-7/8" 3" 1" 2" 275 233
FB-1116 11/16" 3/8" 3-7/8" 3" 1" 2" 250 266
FB-34 3/4" 3/8" 4-13/32" 3-17/32" 1" 2-1/2" 225 333
FB-1316 13/16" 7/16" 4-7/8" 3-57/64" 1-1/4" 2-3/4" 200 366
FB-78 7/8" 7/16" 4-7/8" 3-57/64" 1-1/4" 2-3/4" 200 400
FB-1516 15/16" 7/16" 4-7/8" 3-57/64" 1-1/4" 2-3/4" 175 433
FB-1 1" 7/16" 4-7/8" 3-57/64" 1-1/4" 2-3/4" 175 466
FB-1-116 1-1/16" 7/16" 5-9/16" 4-19/32" 1-1/2" 3-1/8" 150 600
FB-1-18 1-1/8" 7/16" 5-9/16" 4-19/32" 1-1/2" 3-1/8" 150 633
FB-1-316 1-3/16" 7/16" 5-9/16" 4-19/32" 1-1/2" 3-1/8" 150 665
FB-1-14 1-1/4" 1/2" 6-1/8" 5-1/8" 1-1/2" 3-1/2" 125 733
FB-1-516 1-5/16" 1/2" 6-1/8" 5-1/8" 1-1/2" 3-1/2" 125 766
FB-1-38 1-3/8" 1/2" 6-1/8" 5-1/8" 1-1/2" 3-1/2" 125 800
FB-1-716 1-7/16" 1/2" 6-1/8" 5-1/8" 1-1/2" 3-1/2" 125 833
FB-1-12 1-1/2" 1/2" 6-3/4" 5-21/32" 1-3/4" 4" 100 1033
FB-1-916 1-9/16" 1/2" 6-3/4" 5-21/32" 1-3/4" 4" 100 1066
FB-1-58 1-5/8" 1/2" 7" 5-27/32" 1-3/4" 4-3/8" 100 1100
FB-1-1116 1-11/16" 1/2" 7" 5-27/32" 1-3/4" 4-3/8" 100 1166
FB-1-34 1-3/4" 1/2" 7" 5-27/32" 1-3/4" 4-3/8" 75 1200
FB-1-78 1-7/8" 5/8" 7-7/16" 6-3/16" 1-3/4" 4-1/2" 75 1266
FB-1-1516 1-15/16" 5/8" 7-7/16" 6-3/16" 1-3/4" 4-1/2" 75 1333
FB-2 2" 5/8" 8-1/2" 7-1/4" 2" 5" 75 1566
FB-2-18 2-1/8" 5/8" 8-1/2" 7-1/4" 2" 5" 75 1665
FB-2-316 2-3/16" 5/8" 8-1/2" 7-1/4" 2" 5" 75 1700
FB-2-14 2-1/4" 5/8" 9-1/4" 7-15/16" 2" 5-1/2" 75 1900
FB-2-38 2-3/8" 5/8" 9-1/4" 7-15/16" 2" 5-1/2" 50 2000
FB-2-716 2-7/16" 5/8" 9-1/4" 7-15/16" 2" 5-1/2" 50 2066

Plastic 4-Bolt Flange Bearing Sizes


Bearing Part # Bore Sizes Bolt Size Dimension (A) Dimension (B) Dimension (C) Max Speed (RPM) Max Radial Load (LBS)
4FB-12 1/2" 3/8" 3" 2-1/8" 1" 380 400
4FB-916 9/16" 3/8" 3" 2-1/8" 1" 330 450
4FB-58 5/8" 3/8" 3" 2-1/8" 1" 300 500
4FB-1116 11/16" 3/8" 3" 2-1/8" 1" 275 550
4FB-34 3/4" 3/8" 3-3/8" 2-1/2" 1" 250 750
4FB-1316 13/16" 7/16" 3-3/4" 2-3/4" 1-1/4" 230 800
4FB-78 7/8" 7/16" 3-3/4" 2-3/4" 1-1/4" 210 865
4FB-1516 15/16" 7/16" 3-3/4" 2-3/4" 1-1/4" 200 933
4FB-1 1" 7/16" 3-3/4" 2-3/4" 1-1/4" 190 1000
4FB-1-116 1-1/16" 7/16" 4-1/4" 3-1/4" 1-1/2" 175 1266
4FB-1-18 1-1/8" 7/16" 4-1/4" 3-1/4" 1-1/2" 160 1350
4FB-1-316 1-3/16" 7/16" 4-1/4" 3-1/4" 1-1/2" 160 1416
4FB-1-14 1-1/4" 1/2" 4-3/4" 3-5/8" 1-1/2" 150 1450
4FB-1-516 1-5/16" 1/2" 4-3/4" 3-5/8" 1-1/2" 140 1565
4FB-1-38 1-3/8" 1/2" 4-3/4" 3-5/8" 1-1/2" 130 1650
4FB-1-716 1-7/16" 1/2" 4-3/4" 3-5/8" 1-1/2" 130 1700
4FB-1-12 1-1/2" 1/2" 5-1/8" 4" 1-3/4" 125 2100
4FB-1-916 1-9/16" 1/2" 5-1/8" 4" 1-3/4" 120 2183
4FB-1-58 1-5/8" 1/2" 5-1/4" 4-1/8" 1-3/4" 115 2266
4FB-1-1116 1-11/16" 1/2" 5-1/4" 4-1/8" 1-3/4" 110 2350
4FB-1-34 1-3/4" 1/2" 5-1/4" 4-1/8" 1-3/4" 105 2450
4FB-1-78 1-7/8" 1/2" 5-1/2" 4-3/8" 1-3/4" 100 2616
4FB-1-1516 1-15/16" 1/2" 5-1/2" 4-3/8" 1-3/4" 95 2700
4FB-2 2" 5/8" 6-3/8" 5-1/8" 1-3/4" 95 2800
4FB-2-18 2-1/8" 5/8" 6-3/8" 5-1/8" 1-3/4" 85 2966
4FB-2-316 2-3/16" 5/8" 6-3/8" 5-1/8" 1-3/4" 85 3050
4FB-2-14 2-1/4" 5/8" 6-7/8" 5-5/8" 2" 80 3600
4FB-2-38 2-3/8" 5/8" 6-7/8" 5-5/8" 2" 75 3900
4FB-2-716 2-7/16" 5/8" 6-7/8" 5-5/8" 2" 60 5860



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