Compliance with standard ISO Housing material Cast iron Sealing solution 5-lip seals Dimensions d 25mm d1≈33.74mm d2 37.4mm A 30mm A1 12mm A3 3.2mm A5 20.5mm B1 44.4mm B4 4.75mm Da 74.6mm Db1 65mm Db2 71
Compliance with standard JIS Housing material Cast iron Sealing solution Standard seals with additional flingers Dimensions d 50mm d1≈62.51mm A 40mm A1 15mm A3 3.2mm B 51.6mm B4 9mm Da 125.4mm Db1 116mm Db2 118mm J&nbs
Compliance with standard North American standard Housing material Cast iron Sealing solution Standard seals Dimensions d 30.163mm d1≈39.7mm d2 44.1mm A 34.3mm A1 15.9mm A5 22.5mm B1 35.7mm B4 5.95mm Db1 79.4mm J 82.6mm
Compliance with standard North American standard Housing material Cast iron Sealing solution Standard seals Dimensions d 31.75mm d1≈39.7mm A 34.3mm A1 15.9mm A5 22.5mm B 30.2mm B4 5mm Db1 79.4mm J 82.6mm L 108mm N 
Compliance with standard JIS Housing material Cast iron Sealing solution Standard seals with additional flingers Dimensions d 50mm d1≈62.51mm A 39.5mm A1 16mm A5 33mm B 51.6mm B4 9mm Db1 115mm J 111mm L 143mm N 16
Compliance with standard ISO Housing material Cast iron Sealing solution 5-lip seals Dimensions d 34.925mm d1≈46.1mm d2 51.1mm A 34.5mm A1 13mm A3 3.2mm A5 24.5mm B1 51.1mm B4 6.75mm Da 106.4mm Db1 87mm Db2&n
Compliance with standard ISO Housing material Cast iron Sealing solution Standard seals Dimensions d 50.8mm d1≈69.06mm d2 74.5mm A 47.5mm A1 16mm A3 3.2mm A5 37.5mm B1 48.4mm B4 7.9mm Da 150.8mm Db1 122mm Db2
Compliance with standard ISO Housing material Cast iron Sealing solution 5-lip seals Dimensions d 35mm d1≈46.1mm d2 51.1mm A 34.5mm A1 13mm A3 3.2mm A5 24.5mm B1 51.1mm B4 6.75mm Da 106.4mm Db1 87mm Db2
Compliance with standard Not standardized Housing material Composite for the SKF Food Line Sealing solution Gutter seals Dimensions d 35mm d1≈46.1mm A 36mm A1 17mm A5 64.6mm B 42.9mm B4 6mm Da 82mm Ha 6mm J 92mm L 
Compliance with standard ISO Housing material Composite Sealing solution Multiple seals Dimensions d 30mm d1≈39.7mm d2 44.1mm A 33mm A1 15.3mm A3 3.2mm A5 22mm B 36.5mm B1 48.4mm B4 5.95mm Da 93.7mm Db 7
Compliance with standard ISO Housing material Cast iron Sealing solution Standard seals with additional flingers Dimensions d 44.45mm d1≈56.8mm A 39mm A1 14mm A3 3.2mm A5 26.5mm B 49.2mm B4 8mm Da 119.1mm Db1 102mm Db2
Compliance with standard JIS Housing material Cast iron Sealing solution Standard seals with additional flingers Dimensions d 36.512mm d1≈46.8mm A 32mm A1 15mm A5 24.5mm B 42.9mm B4 6.5mm Db1 90mm J 92mm L 118mm N 
Compliance with standard JIS Housing material Cast iron Sealing solution Standard seals with additional flingers Dimensions d 34.925mm d1≈46.8mm A 32mm A1 15mm A5 24.5mm B 42.9mm B4 6.5mm Db1 90mm J 92mm L 118mm N 
Compliance with standard JIS Housing material Cast iron Sealing solution Standard seals with additional flingers Dimensions d 31.75mm d1≈46.8mm A 32mm A1 15mm A5 24.5mm B 42.9mm B4 6.5mm Db1 90mm J 92mm L 118mm N
Compliance with standard Not standardized Housing material Composite for the SKF Food Line Sealing solution Gutter seals Dimensions d 40mm A 38mm A1 17mm A5 67.9mm B 40.7mm B4 10mm J 102mm L 135mm N 14mm s1 30.2mm B&nbs
Compliance with standard JIS Housing material Cast iron Sealing solution Standard seals with additional flingers Dimensions d 101.6mm d1≈135.5mm A 94.5mm A1 33mm B 108mm B4 18mm Db1 275mm J 242mm L 312mm N 38mm s1 
Compliance with standard ISO Housing material Cast iron Sealing solution Standard seals with additional flingers Dimensions d 35mm d1≈46.1mm A 34.5mm A1 13mm A3 3.2mm A5 24.5mm B 42.9mm B4 6mm Da 106.4mm Db1 87mm Db2&n
Compliance with standard ISO Housing material Cast iron Sealing solution Standard seals Dimensions d 17mm d1≈24.2mm d2 27.2mm A 26mm A1 11mm A3 3.2mm B1 28.6mm B4 4.75mm Da 55.6mm Db1 50mm Db2 53mm J 54m
Compliance with standard ISO Housing material Cast iron Sealing solution Standard seals Dimensions d 40mm d1≈51.8mm d2 56.5mm A 38.5mm A1 14mm A3 3.2mm A5 26mm B1 43.2mm B4 6.75mm Da 115.9mm Db1 98mm Db2 
Compliance with standard North American standard Housing material Cast iron Sealing solution Standard seals with additional flingers Dimensions d 68.263mm d1≈82.5mm A 58.7mm A1 22.2mm A5 39mm B 68.3mm B4 10mm Db1 151.6mm J 149.2mm
Compliance with standard ISO Housing material Cast iron Sealing solution Multiple seals Dimensions d 35mm d1≈46.1mm A 34.5mm A1 13mm A3 3.2mm A5 24.5mm B 42.9mm B4 6mm Da 106.4mm Db1 87mm Db2 95mm J 92mm
Compliance with standard North American standard Housing material Cast iron Sealing solution Standard seals with additional flingers Dimensions d 38.1mm d1≈51.8mm d2 62mm A 38.9mm A1 16.7mm A5 26mm Db1 104.8mm J 101.6mm L 130.2mm
Compliance with standard JIS Housing material Cast iron Sealing solution Standard seals with additional flingers Dimensions d 25.4mm d1≈33.7mm A 27mm A1 13mm A5 20.5mm B 34mm B4 5.5mm Db1 68mm J 70mm L 95mm N 12mm
Compliance with standard JIS Housing material Cast iron Sealing solution Standard seals with additional flingers Dimensions d 23.812mm d1≈33.7mm A 27mm A1 13mm A5 20.5mm B 34mm B4 5.5mm Db1 68mm J 70mm L 95mm N 12
Compliance with standard ISO Housing material Cast iron Sealing solution Standard seals with additional flingers Dimensions d 45mm d1≈56.8mm d2 62mm A 39mm A1 14mm A3 3.2mm A5 26.5mm B1 56.3mm B4 6.75mm Da 119.1mm Db1&
Compliance with standard North American standard Housing material Cast iron Sealing solution Standard seals with additional flingers Dimensions d 19.05mm d1≈28.2mm A 28.8mm A1 9.5mm A5 20.5mm B 31mm B4 4.5mm Db1 60.3mm J 63.5mm
This bearing unit will be discontinued at the end of 2019, and new unit series F4BSS is already available as its replacement. Compliance with standard Not standardized Housing material Stainless steel Sealing solution Multiple seals Dimensions d 35mm d1≈46.1mm A 35.7mm A1&nb
Compliance with standard North American standard Housing material Cast iron Sealing solution Standard seals with additional flingers Dimensions d 74.612mm d1≈92.05mm A 65.1mm A1 22.2mm A5 41.5mm B 73.3mm B4 12mm Db1 165.1mm J 152.4mm
Compliance with standard North American standard Housing material Cast iron Sealing solution Standard seals with additional flingers Dimensions d 50.8mm d1≈69.06mm A 50mm A1 17.5mm A5 37.5mm B 55.6mm B4 9mm Db1 133.4mm J 130.2mm
Compliance with standard JIS Housing material Cast iron Sealing solution Standard seals with additional flingers Dimensions d 22.225mm d1≈33.7mm A 27mm A1 13mm A5 20.5mm B 34mm B4 5.5mm Db1 68mm J 70mm L 95mm N 12
Compliance with standard JIS Housing material Cast iron Sealing solution Standard seals with additional flingers Dimensions d 40mm d1≈56.5mm A 42mm A1 18mm B 52mm B4 10mm Db1 115mm J 112mm L 149mm N 19mm s1 33mm
Compliance with standard JIS Housing material Cast iron Sealing solution Standard seals with additional flingers Dimensions d 55mm d1≈69.06mm A 43mm A1 18mm A5 37.5mm B 55.6mm B4 9mm Db1 130mm J 130mm L 162mm N 19