CBK UCFS3 Square Flange Units (Medium-Heavy Series, Set Screw)

CBK UCFS3 square flange units combine a cast iron 4-bolt square flange (FS) housing with a UC set-screw insert bearing. Shaft sizes and housing designations follow the CBK dimension tables.

Key features

Cast iron 4-bolt square flange (FS) housing
Fitted with UC set-screw insert bearing
Self-aligning spherical outside diameter compensates for shaft misalignment
Pre-greased, sealed deep groove ball bearing insert
Metric and inch shaft sizes as listed (inch sizes marked with -dash numbers in 1/16 in)

Specifications

Product	Mounted ball bearing unit (square flange unit)
Unit series	UCFS3
Housing	cast iron 4-bolt square flange (FS) housing
Insert bearing	UC set-screw insert bearing
Codes	35 sizes
Source	CBK Bearing Housing & Ball Bearing Units catalogue, p. 66

UCFS305		Shaft: 25 mm \| Bearing: UC305 \| Housing: FS305 \| Mass: 1.4 kg
UCFS305-16		Shaft: 1 in \| Bearing: UC305-16 \| Housing: FS305 \| Mass: 1.4 kg
UCFS306-18		Shaft: 1-1/8 in \| Bearing: UC306-18 \| Housing: FS306 \| Mass: 1.9 kg
UCFS306		Shaft: 30 mm \| Bearing: UC306 \| Housing: FS306 \| Mass: 1.9 kg
UCFS307-20		Shaft: 1-1/4 in \| Bearing: UC307-20 \| Housing: FS307 \| Mass: 2.3 kg
UCFS307-22		Shaft: 1-3/8 in \| Bearing: UC307-22 \| Housing: FS307 \| Mass: 2.3 kg
UCFS307		Shaft: 35 mm \| Bearing: UC307 \| Housing: FS307 \| Mass: 2.3 kg
UCFS307-23		Shaft: 1-7/16 in \| Bearing: UC307-23 \| Housing: FS307 \| Mass: 2.3 kg
UCFS308-24		Shaft: 1-1/2 in \| Bearing: UC308-24 \| Housing: FS308 \| Mass: 3.4 kg
UCFS308		Shaft: 40 mm \| Bearing: UC308 \| Housing: FS308 \| Mass: 3.4 kg
UCFS309-28		Shaft: 1-3/4 in \| Bearing: UC309-28 \| Housing: FS309 \| Mass: 4.4 kg
UCFS309		Shaft: 45 mm \| Bearing: UC309 \| Housing: FS309 \| Mass: 4.4 kg
UCFS310-31		Shaft: 1-15/16 in \| Bearing: UC310-31 \| Housing: FS310 \| Mass: 5.3 kg
UCFS310		Shaft: 50 mm \| Bearing: UC310 \| Housing: FS310 \| Mass: 5.3 kg
UCFS311-32		Shaft: 2 in \| Bearing: UC311-32 \| Housing: FS311 \| Mass: 6.1 kg
UCFS311		Shaft: 55 mm \| Bearing: UC311 \| Housing: FS311 \| Mass: 6.1 kg
UCFS312		Shaft: 60 mm \| Bearing: UC312 \| Housing: FS312 \| Mass: 7.4 kg
UCFS313-40		Shaft: 2-1/2 in \| Bearing: UC313-40 \| Housing: FS313 \| Mass: 8.8 kg
UCFS313		Shaft: 65 mm \| Bearing: UC313 \| Housing: FS313 \| Mass: 8.8 kg
UCFS314-44		Shaft: 2-3/4 in \| Bearing: UC314-44 \| Housing: FS314 \| Mass: 11.2 kg
UCFS314		Shaft: 70 mm \| Bearing: UC314 \| Housing: FS314 \| Mass: 11.2 kg
UCFS315		Shaft: 75 mm \| Bearing: UC315 \| Housing: FS315 \| Mass: 13.7 kg
UCFS315-48		Shaft: 3 in \| Bearing: UC315-48 \| Housing: FS315 \| Mass: 13.7 kg
UCFS316		Shaft: 80 mm \| Bearing: UC316 \| Housing: FS316 \| Mass: 15.1 kg
UCFS317		Shaft: 85 mm \| Bearing: UC317 \| Housing: FS317 \| Mass: 17.3 kg
UCFS318-56		Shaft: 3-1/2 in \| Bearing: UC318-56 \| Housing: FS318 \| Mass: 21.3 kg
UCFS318		Shaft: 90 mm \| Bearing: UC318 \| Housing: FS318 \| Mass: 21.3 kg
UCFS319		Shaft: 95 mm \| Bearing: UC319 \| Housing: FS319 \| Mass: 24.5 kg
UCFS320		Shaft: 100 mm \| Bearing: UC320 \| Housing: FS320 \| Mass: 29.5 kg
UCFS320-64		Shaft: 4 in \| Bearing: UC320-64 \| Housing: FS320 \| Mass: 29.5 kg
UCFS321		Shaft: 105 mm \| Bearing: UC321 \| Housing: FS321 \| Mass: 32.7 kg
UCFS322		Shaft: 110 mm \| Bearing: UC322 \| Housing: FS322 \| Mass: 39 kg
UCFS324		Shaft: 120 mm \| Bearing: UC324 \| Housing: FS324 \| Mass: 50.6 kg
UCFS326		Shaft: 130 mm \| Bearing: UC326 \| Housing: FS326 \| Mass: 67.7 kg
UCFS328		Shaft: 140 mm \| Bearing: UC328 \| Housing: FS328 \| Mass: 94 kg

Mounted Bearing UnitsCBK

35 product codes available in this family

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CBK UCFS3 Square Flange Units (Medium-Heavy Series, Set Screw)

Brand CBK·Mounted Bearing Units

Available part numbers (35)

UCFS305, UCFS305-16, UCFS306-18, UCFS306, UCFS307-20, UCFS307-22, UCFS307, UCFS307-23, UCFS308-24, UCFS308 + 25 more — see full table ↓

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Product codes & specifications

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	Product code	Spec
	UCFS305	Shaft: 25 mm \| Bearing: UC305 \| Housing: FS305 \| Mass: 1.4 kg
	UCFS305-16	Shaft: 1 in \| Bearing: UC305-16 \| Housing: FS305 \| Mass: 1.4 kg
	UCFS306-18	Shaft: 1-1/8 in \| Bearing: UC306-18 \| Housing: FS306 \| Mass: 1.9 kg
	UCFS306	Shaft: 30 mm \| Bearing: UC306 \| Housing: FS306 \| Mass: 1.9 kg
	UCFS307-20	Shaft: 1-1/4 in \| Bearing: UC307-20 \| Housing: FS307 \| Mass: 2.3 kg
	UCFS307-22	Shaft: 1-3/8 in \| Bearing: UC307-22 \| Housing: FS307 \| Mass: 2.3 kg
	UCFS307	Shaft: 35 mm \| Bearing: UC307 \| Housing: FS307 \| Mass: 2.3 kg
	UCFS307-23	Shaft: 1-7/16 in \| Bearing: UC307-23 \| Housing: FS307 \| Mass: 2.3 kg
	UCFS308-24	Shaft: 1-1/2 in \| Bearing: UC308-24 \| Housing: FS308 \| Mass: 3.4 kg
	UCFS308	Shaft: 40 mm \| Bearing: UC308 \| Housing: FS308 \| Mass: 3.4 kg
	UCFS309-28	Shaft: 1-3/4 in \| Bearing: UC309-28 \| Housing: FS309 \| Mass: 4.4 kg
	UCFS309	Shaft: 45 mm \| Bearing: UC309 \| Housing: FS309 \| Mass: 4.4 kg
	UCFS310-31	Shaft: 1-15/16 in \| Bearing: UC310-31 \| Housing: FS310 \| Mass: 5.3 kg
	UCFS310	Shaft: 50 mm \| Bearing: UC310 \| Housing: FS310 \| Mass: 5.3 kg
	UCFS311-32	Shaft: 2 in \| Bearing: UC311-32 \| Housing: FS311 \| Mass: 6.1 kg
	UCFS311	Shaft: 55 mm \| Bearing: UC311 \| Housing: FS311 \| Mass: 6.1 kg
	UCFS312	Shaft: 60 mm \| Bearing: UC312 \| Housing: FS312 \| Mass: 7.4 kg
	UCFS313-40	Shaft: 2-1/2 in \| Bearing: UC313-40 \| Housing: FS313 \| Mass: 8.8 kg
	UCFS313	Shaft: 65 mm \| Bearing: UC313 \| Housing: FS313 \| Mass: 8.8 kg
	UCFS314-44	Shaft: 2-3/4 in \| Bearing: UC314-44 \| Housing: FS314 \| Mass: 11.2 kg
	UCFS314	Shaft: 70 mm \| Bearing: UC314 \| Housing: FS314 \| Mass: 11.2 kg
	UCFS315	Shaft: 75 mm \| Bearing: UC315 \| Housing: FS315 \| Mass: 13.7 kg
	UCFS315-48	Shaft: 3 in \| Bearing: UC315-48 \| Housing: FS315 \| Mass: 13.7 kg
	UCFS316	Shaft: 80 mm \| Bearing: UC316 \| Housing: FS316 \| Mass: 15.1 kg
	UCFS317	Shaft: 85 mm \| Bearing: UC317 \| Housing: FS317 \| Mass: 17.3 kg
	UCFS318-56	Shaft: 3-1/2 in \| Bearing: UC318-56 \| Housing: FS318 \| Mass: 21.3 kg
	UCFS318	Shaft: 90 mm \| Bearing: UC318 \| Housing: FS318 \| Mass: 21.3 kg
	UCFS319	Shaft: 95 mm \| Bearing: UC319 \| Housing: FS319 \| Mass: 24.5 kg
	UCFS320	Shaft: 100 mm \| Bearing: UC320 \| Housing: FS320 \| Mass: 29.5 kg
	UCFS320-64	Shaft: 4 in \| Bearing: UC320-64 \| Housing: FS320 \| Mass: 29.5 kg
	UCFS321	Shaft: 105 mm \| Bearing: UC321 \| Housing: FS321 \| Mass: 32.7 kg
	UCFS322	Shaft: 110 mm \| Bearing: UC322 \| Housing: FS322 \| Mass: 39 kg
	UCFS324	Shaft: 120 mm \| Bearing: UC324 \| Housing: FS324 \| Mass: 50.6 kg
	UCFS326	Shaft: 130 mm \| Bearing: UC326 \| Housing: FS326 \| Mass: 67.7 kg
	UCFS328	Shaft: 140 mm \| Bearing: UC328 \| Housing: FS328 \| Mass: 94 kg

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CBK UCFS3 Square Flange Units (Medium-Heavy Series, Set Screw)