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
88345043080	N/A QF25S303X42MM	N/A 42 mm	N/A 25	N/A 12x3.3	N/A 1.81 in46 mm	N/A
88345032989	N/A QF25X42MM	N/A 42 mm	N/A 25	N/A 12x3.3	N/A 1.81 in46 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
88345095925	N/A QF25S303X45MM	N/A 45 mm	N/A 25	N/A 14x3.8	N/A 1.81 in46 mm	N/A
88345032990	N/A QF25X45MM	N/A 45 mm	N/A 25	N/A 14x3.8	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
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
88345043167	N/A QF50S303X60MM	N/A 60 mm	N/A 50	N/A 18x4.4	N/A 2.16 in54.9 mm	N/A
88345031045	N/A QF50X60MM	N/A 60 mm	N/A 50	N/A 18x4.4	N/A 2.16 in54.9 mm	N/A

88345043080

N/A QF25S303X42MM

N/A 42 mm

N/A 25

N/A 12x3.3

N/A 1.81 in46 mm

N/A

88345032989

N/A QF25X42MM

N/A 42 mm

N/A 25

N/A 12x3.3

N/A 1.81 in46 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

88345095925

N/A QF25S303X45MM

N/A 45 mm

N/A 25

N/A 14x3.8

N/A 1.81 in46 mm

N/A

88345032990

N/A QF25X45MM

N/A 45 mm

N/A 25

N/A 14x3.8

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

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

88345043167

N/A QF50S303X60MM

N/A 60 mm

N/A 50

N/A 18x4.4

N/A 2.16 in54.9 mm

N/A

88345031045

N/A QF50X60MM

N/A 60 mm

N/A 50

N/A 18x4.4

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