CBK UCF3 Square Flange Units (Medium-Heavy Series, Set Screw)

CBK UCF3 square flange units combine a cast iron 4-bolt square flange (F) 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 (F) 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	UCF3
Housing	cast iron 4-bolt square flange (F) housing
Insert bearing	UC set-screw insert bearing
Codes	35 sizes
Source	CBK Bearing Housing & Ball Bearing Units catalogue, p. 60

UCF305		Shaft: 25 mm \| Bearing: UC305 \| Housing: F305 \| Mass: 1.3 kg
UCF305-16		Shaft: 1 in \| Bearing: UC305-16 \| Housing: F305 \| Mass: 1.3 kg
UCF306-18		Shaft: 1-1/8 in \| Bearing: UC306-18 \| Housing: F306 \| Mass: 1.9 kg
UCF306		Shaft: 30 mm \| Bearing: UC306 \| Housing: F306 \| Mass: 1.9 kg
UCF307-20		Shaft: 1-1/4 in \| Bearing: UC307-20 \| Housing: F307 \| Mass: 2.3 kg
UCF307-22		Shaft: 1-3/8 in \| Bearing: UC307-22 \| Housing: F307 \| Mass: 2.3 kg
UCF307		Shaft: 35 mm \| Bearing: UC307 \| Housing: F307 \| Mass: 2.3 kg
UCF307-23		Shaft: 1-7/16 in \| Bearing: UC307-23 \| Housing: F307 \| Mass: 2.3 kg
UCF308-24		Shaft: 1-1/2 in \| Bearing: UC308-24 \| Housing: F308 \| Mass: 3.1 kg
UCF308		Shaft: 40 mm \| Bearing: UC308 \| Housing: F308 \| Mass: 3.1 kg
UCF309-28		Shaft: 1-3/4 in \| Bearing: UC309-28 \| Housing: F309 \| Mass: 4 kg
UCF309		Shaft: 45 mm \| Bearing: UC309 \| Housing: F309 \| Mass: 4 kg
UCF310-31		Shaft: 1-15/16 in \| Bearing: UC310-31 \| Housing: F310 \| Mass: 5.1 kg
UCF310		Shaft: 50 mm \| Bearing: UC310 \| Housing: F310 \| Mass: 5.1 kg
UCF311-32		Shaft: 2 in \| Bearing: UC311-32 \| Housing: F311 \| Mass: 5.8 kg
UCF311		Shaft: 55 mm \| Bearing: UC311 \| Housing: F311 \| Mass: 5.8 kg
UCF312		Shaft: 60 mm \| Bearing: UC312 \| Housing: F312 \| Mass: 6.9 kg
UCF313-40		Shaft: 2-1/2 in \| Bearing: UC313-40 \| Housing: F313 \| Mass: 7.8 kg
UCF313		Shaft: 65 mm \| Bearing: UC313 \| Housing: F313 \| Mass: 7.8 kg
UCF314-44		Shaft: 2-3/4 in \| Bearing: UC314-44 \| Housing: F314 \| Mass: 10.1 kg
UCF314		Shaft: 70 mm \| Bearing: UC314 \| Housing: F314 \| Mass: 10.1 kg
UCF315		Shaft: 75 mm \| Bearing: UC315 \| Housing: F315 \| Mass: 11.6 kg
UCF315-48		Shaft: 3 in \| Bearing: UC315-48 \| Housing: F315 \| Mass: 11.6 kg
UCF316		Shaft: 80 mm \| Bearing: UC316 \| Housing: F316 \| Mass: 12.8 kg
UCF317		Shaft: 85 mm \| Bearing: UC317 \| Housing: F317 \| Mass: 15.3 kg
UCF318-56		Shaft: 3-1/2 in \| Bearing: UC318-56 \| Housing: F318 \| Mass: 18.9 kg
UCF318		Shaft: 90 mm \| Bearing: UC318 \| Housing: F318 \| Mass: 18.9 kg
UCF319		Shaft: 95 mm \| Bearing: UC319 \| Housing: F319 \| Mass: 21.6 kg
UCF320		Shaft: 100 mm \| Bearing: UC320 \| Housing: F320 \| Mass: 25.8 kg
UCF320-64		Shaft: 4 in \| Bearing: UC320-64 \| Housing: F320 \| Mass: 25.8 kg
UCF321		Shaft: 105 mm \| Bearing: UC321 \| Housing: F321 \| Mass: 27 kg
UCF322		Shaft: 110 mm \| Bearing: UC322 \| Housing: F322 \| Mass: 35.3 kg
UCF324		Shaft: 120 mm \| Bearing: UC324 \| Housing: F324 \| Mass: 47.3 kg
UCF326		Shaft: 130 mm \| Bearing: UC326 \| Housing: F326 \| Mass: 65.5 kg
UCF328		Shaft: 140 mm \| Bearing: UC328 \| Housing: F328 \| Mass: 93.4 kg

Mounted Bearing UnitsCBK

35 product codes available in this family

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CBK UCF3 Square Flange Units (Medium-Heavy Series, Set Screw)

Brand CBK·Mounted Bearing Units

Available part numbers (35)

UCF305, UCF305-16, UCF306-18, UCF306, UCF307-20, UCF307-22, UCF307, UCF307-23, UCF308-24, UCF308 + 25 more — see full table ↓

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Product codes & specifications

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	Product code	Spec
	UCF305	Shaft: 25 mm \| Bearing: UC305 \| Housing: F305 \| Mass: 1.3 kg
	UCF305-16	Shaft: 1 in \| Bearing: UC305-16 \| Housing: F305 \| Mass: 1.3 kg
	UCF306-18	Shaft: 1-1/8 in \| Bearing: UC306-18 \| Housing: F306 \| Mass: 1.9 kg
	UCF306	Shaft: 30 mm \| Bearing: UC306 \| Housing: F306 \| Mass: 1.9 kg
	UCF307-20	Shaft: 1-1/4 in \| Bearing: UC307-20 \| Housing: F307 \| Mass: 2.3 kg
	UCF307-22	Shaft: 1-3/8 in \| Bearing: UC307-22 \| Housing: F307 \| Mass: 2.3 kg
	UCF307	Shaft: 35 mm \| Bearing: UC307 \| Housing: F307 \| Mass: 2.3 kg
	UCF307-23	Shaft: 1-7/16 in \| Bearing: UC307-23 \| Housing: F307 \| Mass: 2.3 kg
	UCF308-24	Shaft: 1-1/2 in \| Bearing: UC308-24 \| Housing: F308 \| Mass: 3.1 kg
	UCF308	Shaft: 40 mm \| Bearing: UC308 \| Housing: F308 \| Mass: 3.1 kg
	UCF309-28	Shaft: 1-3/4 in \| Bearing: UC309-28 \| Housing: F309 \| Mass: 4 kg
	UCF309	Shaft: 45 mm \| Bearing: UC309 \| Housing: F309 \| Mass: 4 kg
	UCF310-31	Shaft: 1-15/16 in \| Bearing: UC310-31 \| Housing: F310 \| Mass: 5.1 kg
	UCF310	Shaft: 50 mm \| Bearing: UC310 \| Housing: F310 \| Mass: 5.1 kg
	UCF311-32	Shaft: 2 in \| Bearing: UC311-32 \| Housing: F311 \| Mass: 5.8 kg
	UCF311	Shaft: 55 mm \| Bearing: UC311 \| Housing: F311 \| Mass: 5.8 kg
	UCF312	Shaft: 60 mm \| Bearing: UC312 \| Housing: F312 \| Mass: 6.9 kg
	UCF313-40	Shaft: 2-1/2 in \| Bearing: UC313-40 \| Housing: F313 \| Mass: 7.8 kg
	UCF313	Shaft: 65 mm \| Bearing: UC313 \| Housing: F313 \| Mass: 7.8 kg
	UCF314-44	Shaft: 2-3/4 in \| Bearing: UC314-44 \| Housing: F314 \| Mass: 10.1 kg
	UCF314	Shaft: 70 mm \| Bearing: UC314 \| Housing: F314 \| Mass: 10.1 kg
	UCF315	Shaft: 75 mm \| Bearing: UC315 \| Housing: F315 \| Mass: 11.6 kg
	UCF315-48	Shaft: 3 in \| Bearing: UC315-48 \| Housing: F315 \| Mass: 11.6 kg
	UCF316	Shaft: 80 mm \| Bearing: UC316 \| Housing: F316 \| Mass: 12.8 kg
	UCF317	Shaft: 85 mm \| Bearing: UC317 \| Housing: F317 \| Mass: 15.3 kg
	UCF318-56	Shaft: 3-1/2 in \| Bearing: UC318-56 \| Housing: F318 \| Mass: 18.9 kg
	UCF318	Shaft: 90 mm \| Bearing: UC318 \| Housing: F318 \| Mass: 18.9 kg
	UCF319	Shaft: 95 mm \| Bearing: UC319 \| Housing: F319 \| Mass: 21.6 kg
	UCF320	Shaft: 100 mm \| Bearing: UC320 \| Housing: F320 \| Mass: 25.8 kg
	UCF320-64	Shaft: 4 in \| Bearing: UC320-64 \| Housing: F320 \| Mass: 25.8 kg
	UCF321	Shaft: 105 mm \| Bearing: UC321 \| Housing: F321 \| Mass: 27 kg
	UCF322	Shaft: 110 mm \| Bearing: UC322 \| Housing: F322 \| Mass: 35.3 kg
	UCF324	Shaft: 120 mm \| Bearing: UC324 \| Housing: F324 \| Mass: 47.3 kg
	UCF326	Shaft: 130 mm \| Bearing: UC326 \| Housing: F326 \| Mass: 65.5 kg
	UCF328	Shaft: 140 mm \| Bearing: UC328 \| Housing: F328 \| Mass: 93.4 kg

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CBK UCF3 Square Flange Units (Medium-Heavy Series, Set Screw)