QUICK FLEX Standard Hubs with Keyway - Metric Bores On The Timken Company

Part Number	Description	Bore Size	Coupling Size	Keyway Size (mm)	Length thru Bore	CAD
88345043744	N/A QF100X65MMU	N/A 65 mm	N/A 100	N/A 18x4.4	N/A 2.46 in62.5 mm	N/A
88345096377	N/A QF100S303X70MM	N/A 70 mm	N/A 100	N/A 20x4.9	N/A 2.46 in62.5 mm	N/A
88345005176	N/A QF100X70MM	N/A 70 mm	N/A 100	N/A 20x4.9	N/A 2.46 in62.5 mm	N/A
88345042885	N/A QF100X70MMU	N/A 70 mm	N/A 100	N/A 20x4.9	N/A 2.46 in62.5 mm	N/A
88345044005	N/A QF100X73MM	N/A 73 mm	N/A 100	N/A 20x4.9	N/A 2.46 in62.5 mm	N/A
88345095986	N/A QF100S303X75MM	N/A 75 mm	N/A 100	N/A 20x4.9	N/A 2.46 in62.5 mm	N/A
88345005177	N/A QF100X75MM	N/A 75 mm	N/A 100	N/A 20x4.9	N/A 2.46 in62.5 mm	N/A
88345042886	N/A QF100X75MMU	N/A 75 mm	N/A 100	N/A 20x4.9	N/A 2.46 in62.5 mm	N/A
88345031040	N/A QF50X40MM	N/A 40 mm	N/A 50	N/A 12x3.3	N/A 2.16 in54.9 mm	N/A
88345043192	N/A QF50X40MMU	N/A 40 mm	N/A 50	N/A 12x3.3	N/A 2.16 in54.9 mm	N/A
88345031041	N/A QF50X42MM	N/A 42 mm	N/A 50	N/A 12x3.3	N/A 2.16 in54.9 mm	N/A
88345043722	N/A QF50X42MMU	N/A 42 mm	N/A 50	N/A 12x3.3	N/A 2.16 in54.9 mm	N/A
88345043166	N/A QF50S303X45MM	N/A 45 mm	N/A 50	N/A 14x3.8	N/A 2.16 in54.9 mm	N/A
88345031042	N/A QF50X45MM	N/A 45 mm	N/A 50	N/A 14x3.8	N/A 2.16 in54.9 mm	N/A
88345043723	N/A QF50X45MMU	N/A 45 mm	N/A 50	N/A 14x3.8	N/A 2.16 in54.9 mm	N/A
88345044427	N/A QF50S303X48MM	N/A 48 mm	N/A 50	N/A 14x3.8	N/A 2.16 in54.9 mm	N/A
88345039972	N/A QF50X48MM	N/A 48 mm	N/A 50	N/A 14x3.8	N/A 2.16 in54.9 mm	N/A
88345043724	N/A QF50X48MMU	N/A 48 mm	N/A 50	N/A 14x3.8	N/A 2.16 in54.9 mm	N/A
88345044428	N/A QF50S303X50MM	N/A 50 mm	N/A 50	N/A 14x3.8	N/A 2.16 in54.9 mm	N/A
88345031043	N/A QF50X50MM	N/A 50 mm	N/A 50	N/A 14x3.8	N/A 2.16 in54.9 mm	N/A
88345043725	N/A QF50X50MMU	N/A 50 mm	N/A 50	N/A 14x3.8	N/A 2.16 in54.9 mm	N/A
88345096031	N/A QF50X50MME	N/A 50 mm	N/A 50	N/A 16 x 4.3	N/A 2.16 in54.9 mm	N/A
88345045805	N/A QF50X52MM	N/A 52 mm	N/A 50	N/A 16x4.3	N/A 2.16 in54.9 mm	N/A
88345031044	N/A QF50X55MM	N/A 55 mm	N/A 50	N/A 16x4.3	N/A 2.16 in54.9 mm	N/A
88345043726	N/A QF50X55MMU	N/A 55 mm	N/A 50	N/A 16x4.3	N/A 2.16 in54.9 mm	N/A

88345043744

N/A QF100X65MMU

N/A 65 mm

N/A 100

N/A 18x4.4

N/A 2.46 in62.5 mm

N/A

88345096377

N/A QF100S303X70MM

N/A 70 mm

N/A 100

N/A 20x4.9

N/A 2.46 in62.5 mm

N/A

88345005176

N/A QF100X70MM

N/A 70 mm

N/A 100

N/A 20x4.9

N/A 2.46 in62.5 mm

N/A

88345042885

N/A QF100X70MMU

N/A 70 mm

N/A 100

N/A 20x4.9

N/A 2.46 in62.5 mm

N/A

88345044005

N/A QF100X73MM

N/A 73 mm

N/A 100

N/A 20x4.9

N/A 2.46 in62.5 mm

N/A

88345095986

N/A QF100S303X75MM

N/A 75 mm

N/A 100

N/A 20x4.9

N/A 2.46 in62.5 mm

N/A

88345005177

N/A QF100X75MM

N/A 75 mm

N/A 100

N/A 20x4.9

N/A 2.46 in62.5 mm

N/A

88345042886

N/A QF100X75MMU

N/A 75 mm

N/A 100

N/A 20x4.9

N/A 2.46 in62.5 mm

N/A

88345031040

N/A QF50X40MM

N/A 40 mm

N/A 50

N/A 12x3.3

N/A 2.16 in54.9 mm

N/A

88345043192

N/A QF50X40MMU

N/A 40 mm

N/A 50

N/A 12x3.3

N/A 2.16 in54.9 mm

N/A

88345031041

N/A QF50X42MM

N/A 42 mm

N/A 50

N/A 12x3.3

N/A 2.16 in54.9 mm

N/A

88345043722

N/A QF50X42MMU

N/A 42 mm

N/A 50

N/A 12x3.3

N/A 2.16 in54.9 mm

N/A

88345043166

N/A QF50S303X45MM

N/A 45 mm

N/A 50

N/A 14x3.8

N/A 2.16 in54.9 mm

N/A

88345031042

N/A QF50X45MM

N/A 45 mm

N/A 50

N/A 14x3.8

N/A 2.16 in54.9 mm

N/A

88345043723

N/A QF50X45MMU

N/A 45 mm

N/A 50

N/A 14x3.8

N/A 2.16 in54.9 mm

N/A

88345044427

N/A QF50S303X48MM

N/A 48 mm

N/A 50

N/A 14x3.8

N/A 2.16 in54.9 mm

N/A

88345039972

N/A QF50X48MM

N/A 48 mm

N/A 50

N/A 14x3.8

N/A 2.16 in54.9 mm

N/A

88345043724

N/A QF50X48MMU

N/A 48 mm

N/A 50

N/A 14x3.8

N/A 2.16 in54.9 mm

N/A

88345044428

N/A QF50S303X50MM

N/A 50 mm

N/A 50

N/A 14x3.8

N/A 2.16 in54.9 mm

N/A

88345031043

N/A QF50X50MM

N/A 50 mm

N/A 50

N/A 14x3.8

N/A 2.16 in54.9 mm

N/A

88345043725

N/A QF50X50MMU

N/A 50 mm

N/A 50

N/A 14x3.8

N/A 2.16 in54.9 mm

N/A

88345096031

N/A QF50X50MME

N/A 50 mm

N/A 50

N/A 16 x 4.3

N/A 2.16 in54.9 mm

N/A

88345045805

N/A QF50X52MM

N/A 52 mm

N/A 50

N/A 16x4.3

N/A 2.16 in54.9 mm

N/A

88345031044

N/A QF50X55MM

N/A 55 mm

N/A 50

N/A 16x4.3

N/A 2.16 in54.9 mm

N/A

88345043726

N/A QF50X55MMU

N/A 55 mm

N/A 50

N/A 16x4.3

N/A 2.16 in54.9 mm

N/A

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No Preference
10x3.3
12 x 3.3
12x3.3
14x3.8
16 x 4.3
16x4.3
18x4.4
20 x 4.9
20x4.9
22 x 5.4
22x5.4
25x5.4
28x6.4
32x7.4
36x8.4
3x1.4
40x9.4
45x10.4
4x1.8
50x11.4
56x12.4
5x2.3
6x2.8
8 x 3.3
8x3.3

Bore Size (mm)

Coupling Size

Keyway Size

Part Number

Description

Bore Size

Coupling Size

Keyway Size (mm)

Length thru Bore

CAD