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
88345043705	N/A QF25X42MMU	N/A 42 mm	N/A 25	N/A 12x3.3	N/A 1.81 in46 mm	N/A
88345044298	N/A QF25X43MM	N/A 43 mm	N/A 25	N/A 12x3.3	N/A 1.81 in46 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
88345050078	N/A QF175X39MM	N/A 39 mm	N/A 175	N/A 12x3.3	N/A 2.67 in67.8 mm	N/A
88345043000	N/A QF175X40MM	N/A 40 mm	N/A 175	N/A 12x3.3	N/A 2.67 in67.8 mm	N/A
88345043001	N/A QF175X42MM	N/A 42 mm	N/A 175	N/A 12x3.3	N/A 2.67 in67.8 mm	N/A
88345044134	N/A QF175X42MMU	N/A 42 mm	N/A 175	N/A 12x3.3	N/A 2.67 in67.8 mm	N/A
88345044425	N/A QF50S303X40MM	N/A 40 mm	N/A 50	N/A 12x3.3	N/A 2.16 in54.9 mm	N/A
88345043706	N/A QF25X45MMU	N/A 45 mm	N/A 25	N/A 14x3.8	N/A 1.81 in46 mm	N/A
88345044299	N/A QF25X46MM	N/A 46 mm	N/A 25	N/A 14x3.8	N/A 1.81 in46 mm	N/A
88345095980	N/A QF25S303X48MM	N/A 48 mm	N/A 25	N/A 14x3.8	N/A 1.81 in46 mm	N/A
88345005328	N/A QF25X48MM	N/A 48 mm	N/A 25	N/A 14x3.8	N/A 1.81 in46 mm	N/A
88345043111	N/A QF25X48MMU	N/A 48 mm	N/A 25	N/A 14x3.8	N/A 1.81 in46 mm	N/A
88345005329	N/A QF25X50MM	N/A 50 mm	N/A 25	N/A 14x3.8	N/A 1.81 in46 mm	N/A
88345043707	N/A QF25X50MMU	N/A 50 mm	N/A 25	N/A 14x3.8	N/A 1.81 in46 mm	N/A
88345096002	N/A QF175X45MM	N/A 45 mm	N/A 175	N/A 14x3.8	N/A 2.67 in67.8 mm	N/A
88345044103	N/A QF175S303X50MM	N/A 50 mm	N/A 175	N/A 14x3.8	N/A 2.67 in67.8 mm	N/A
88345096052	N/A QF175X50MM	N/A 50 mm	N/A 175	N/A 14x3.8	N/A 2.67 in67.8 mm	N/A
88345043002	N/A QF175X50MMU	N/A 50 mm	N/A 175	N/A 14x3.8	N/A 2.67 in67.8 mm	N/A
88345044250	N/A QF250X50MM	N/A 50 mm	N/A 250	N/A 14x3.8	N/A 3.1 in78.7 mm	N/A
88345043151	N/A QF500X50MM	N/A 50 mm	N/A 500	N/A 14x3.8	N/A 3.75 in95.3 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

88345043705

N/A QF25X42MMU

N/A 42 mm

N/A 25

N/A 12x3.3

N/A 1.81 in46 mm

N/A

88345044298

N/A QF25X43MM

N/A 43 mm

N/A 25

N/A 12x3.3

N/A 1.81 in46 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

88345050078

N/A QF175X39MM

N/A 39 mm

N/A 175

N/A 12x3.3

N/A 2.67 in67.8 mm

N/A

88345043000

N/A QF175X40MM

N/A 40 mm

N/A 175

N/A 12x3.3

N/A 2.67 in67.8 mm

N/A

88345043001

N/A QF175X42MM

N/A 42 mm

N/A 175

N/A 12x3.3

N/A 2.67 in67.8 mm

N/A

88345044134

N/A QF175X42MMU

N/A 42 mm

N/A 175

N/A 12x3.3

N/A 2.67 in67.8 mm

N/A

88345044425

N/A QF50S303X40MM

N/A 40 mm

N/A 50

N/A 12x3.3

N/A 2.16 in54.9 mm

N/A

88345043706

N/A QF25X45MMU

N/A 45 mm

N/A 25

N/A 14x3.8

N/A 1.81 in46 mm

N/A

88345044299

N/A QF25X46MM

N/A 46 mm

N/A 25

N/A 14x3.8

N/A 1.81 in46 mm

N/A

88345095980

N/A QF25S303X48MM

N/A 48 mm

N/A 25

N/A 14x3.8

N/A 1.81 in46 mm

N/A

88345005328

N/A QF25X48MM

N/A 48 mm

N/A 25

N/A 14x3.8

N/A 1.81 in46 mm

N/A

88345043111

N/A QF25X48MMU

N/A 48 mm

N/A 25

N/A 14x3.8

N/A 1.81 in46 mm

N/A

88345005329

N/A QF25X50MM

N/A 50 mm

N/A 25

N/A 14x3.8

N/A 1.81 in46 mm

N/A

88345043707

N/A QF25X50MMU

N/A 50 mm

N/A 25

N/A 14x3.8

N/A 1.81 in46 mm

N/A

88345096002

N/A QF175X45MM

N/A 45 mm

N/A 175

N/A 14x3.8

N/A 2.67 in67.8 mm

N/A

88345044103

N/A QF175S303X50MM

N/A 50 mm

N/A 175

N/A 14x3.8

N/A 2.67 in67.8 mm

N/A

88345096052

N/A QF175X50MM

N/A 50 mm

N/A 175

N/A 14x3.8

N/A 2.67 in67.8 mm

N/A

88345043002

N/A QF175X50MMU

N/A 50 mm

N/A 175

N/A 14x3.8

N/A 2.67 in67.8 mm

N/A

88345044250

N/A QF250X50MM

N/A 50 mm

N/A 250

N/A 14x3.8

N/A 3.1 in78.7 mm

N/A

88345043151

N/A QF500X50MM

N/A 50 mm

N/A 500

N/A 14x3.8

N/A 3.75 in95.3 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

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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