QUICK FLEX Standard Hubs with Keyway - Inch (Imperial) Bores On The Timken Company

Part Number	Description	Bore Size	Coupling Size	Keyway Size (W x D)	Length thru Bore	CAD
88345044071	N/A QF15X1-5/8E	N/A 1-5/8 in	N/A 15	N/A 1/2 x 1/4 in	N/A 1.34 in34 mm	N/A
88345043098	N/A QF25X1-1/2E	N/A 1-1/2 in	N/A 25	N/A 1/2 x1/4 in	N/A 1.81 in46 mm	N/A
88345044078	N/A QF15X2	N/A 2 in	N/A 15	N/A 1/2x1/4 in	N/A 1.34 in34 mm	N/A
88345043074	N/A QF25S303X2	N/A 2 in	N/A 25	N/A 1/2x1/4 in	N/A 1.81 in46 mm	N/A
88345005317	N/A QF25X2	N/A 2 in	N/A 25	N/A 1/2x1/4 in	N/A 1.81 in46 mm	N/A
88345096016	N/A QF25X2U	N/A 2 in	N/A 25	N/A 1/2x1/4 in	N/A 1.81 in46 mm	N/A
88345044260	N/A QF25S303X1-1/2E	N/A 1-1/2 in	N/A 25	N/A 1/2x1/4 in	N/A 1.81 in46 mm	N/A
88345049978	N/A QF25S303X1-3/4E	N/A 1-3/4 in	N/A 25	N/A 1/2x1/4 in	N/A 1.81 in46 mm	N/A
88345040996	N/A QF25X1-3/4E	N/A 1-3/4 in	N/A 25	N/A 1/2x1/4 in	N/A 1.81 in46 mm	N/A
88345040997	N/A QF25X2-1/4	N/A 2-1/4 in	N/A 25	N/A 1/2x1/4 in	N/A 1.81 in46 mm	N/A
88345043073	N/A QF25S303X1-7/8	N/A 1-7/8 in	N/A 25	N/A 1/2x1/4 in	N/A 1.81 in46 mm	N/A
88345005315	N/A QF25X1-7/8	N/A 1-7/8 in	N/A 25	N/A 1/2x1/4 in	N/A 1.81 in46 mm	N/A
88345096015	N/A QF25X1-7/8U	N/A 1-7/8 in	N/A 25	N/A 1/2x1/4 in	N/A 1.81 in46 mm	N/A
88345043075	N/A QF25S303X2-1/8	N/A 2-1/8 in	N/A 25	N/A 1/2x1/4 in	N/A 1.81 in46 mm	N/A
88345095995	N/A QF25S316X2-1/8	N/A 2-1/8 in	N/A 25	N/A 1/2x1/4 in	N/A 1.81 in46 mm	N/A
88345005318	N/A QF25X2-1/8	N/A 2-1/8 in	N/A 25	N/A 1/2x1/4 in	N/A 1.81 in46 mm	N/A
88345043109	N/A QF25X2-1/8U	N/A 2-1/8 in	N/A 25	N/A 1/2x1/4 in	N/A 1.81 in46 mm	N/A
88345044262	N/A QF25S303X1-15/16	N/A 1-15/16 in	N/A 25	N/A 1/2x1/4 in	N/A 1.81 in46 mm	N/A
88345005309	N/A QF25X1-15/16	N/A 1-15/16 in	N/A 25	N/A 1/2x1/4 in	N/A 1.81 in46 mm	N/A
88345043693	N/A QF25X1-15/16U	N/A 1-15/16 in	N/A 25	N/A 1/2x1/4 in	N/A 1.81 in46 mm	N/A
88345044286	N/A QF25X2-1/16	N/A 2-1/16 in	N/A 25	N/A 1/2x1/4 in	N/A 1.81 in46 mm	N/A
88345095893	N/A QF50S303X2	N/A 2 in	N/A 50	N/A 1/2x1/4 in	N/A 2.16 in54.9 mm	N/A
88345043253	N/A QF50S316X2U	N/A 2 in	N/A 50	N/A 1/2x1/4 in	N/A 2.16 in54.9 mm	N/A
88345005389	N/A QF50X2	N/A 2 in	N/A 50	N/A 1/2x1/4 in	N/A 2.16 in54.9 mm	N/A
88345043191	N/A QF50X2U	N/A 2 in	N/A 50	N/A 1/2x1/4 in	N/A 2.16 in54.9 mm	N/A

88345044071

N/A QF15X1-5/8E

N/A 1-5/8 in

N/A 15

N/A 1/2 x 1/4 in

N/A 1.34 in34 mm

N/A

88345043098

N/A QF25X1-1/2E

N/A 1-1/2 in

N/A 25

N/A 1/2 x1/4 in

N/A 1.81 in46 mm

N/A

88345044078

N/A QF15X2

N/A 2 in

N/A 15

N/A 1/2x1/4 in

N/A 1.34 in34 mm

N/A

88345043074

N/A QF25S303X2

N/A 2 in

N/A 25

N/A 1/2x1/4 in

N/A 1.81 in46 mm

N/A

88345005317

N/A QF25X2

N/A 2 in

N/A 25

N/A 1/2x1/4 in

N/A 1.81 in46 mm

N/A

88345096016

N/A QF25X2U

N/A 2 in

N/A 25

N/A 1/2x1/4 in

N/A 1.81 in46 mm

N/A

88345044260

N/A QF25S303X1-1/2E

N/A 1-1/2 in

N/A 25

N/A 1/2x1/4 in

N/A 1.81 in46 mm

N/A

88345049978

N/A QF25S303X1-3/4E

N/A 1-3/4 in

N/A 25

N/A 1/2x1/4 in

N/A 1.81 in46 mm

N/A

88345040996

N/A QF25X1-3/4E

N/A 1-3/4 in

N/A 25

N/A 1/2x1/4 in

N/A 1.81 in46 mm

N/A

88345040997

N/A QF25X2-1/4

N/A 2-1/4 in

N/A 25

N/A 1/2x1/4 in

N/A 1.81 in46 mm

N/A

88345043073

N/A QF25S303X1-7/8

N/A 1-7/8 in

N/A 25

N/A 1/2x1/4 in

N/A 1.81 in46 mm

N/A

88345005315

N/A QF25X1-7/8

N/A 1-7/8 in

N/A 25

N/A 1/2x1/4 in

N/A 1.81 in46 mm

N/A

88345096015

N/A QF25X1-7/8U

N/A 1-7/8 in

N/A 25

N/A 1/2x1/4 in

N/A 1.81 in46 mm

N/A

88345043075

N/A QF25S303X2-1/8

N/A 2-1/8 in

N/A 25

N/A 1/2x1/4 in

N/A 1.81 in46 mm

N/A

88345095995

N/A QF25S316X2-1/8

N/A 2-1/8 in

N/A 25

N/A 1/2x1/4 in

N/A 1.81 in46 mm

N/A

88345005318

N/A QF25X2-1/8

N/A 2-1/8 in

N/A 25

N/A 1/2x1/4 in

N/A 1.81 in46 mm

N/A

88345043109

N/A QF25X2-1/8U

N/A 2-1/8 in

N/A 25

N/A 1/2x1/4 in

N/A 1.81 in46 mm

N/A

88345044262

N/A QF25S303X1-15/16

N/A 1-15/16 in

N/A 25

N/A 1/2x1/4 in

N/A 1.81 in46 mm

N/A

88345005309

N/A QF25X1-15/16

N/A 1-15/16 in

N/A 25

N/A 1/2x1/4 in

N/A 1.81 in46 mm

N/A

88345043693

N/A QF25X1-15/16U

N/A 1-15/16 in

N/A 25

N/A 1/2x1/4 in

N/A 1.81 in46 mm

N/A

88345044286

N/A QF25X2-1/16

N/A 2-1/16 in

N/A 25

N/A 1/2x1/4 in

N/A 1.81 in46 mm

N/A

88345095893

N/A QF50S303X2

N/A 2 in

N/A 50

N/A 1/2x1/4 in

N/A 2.16 in54.9 mm

N/A

88345043253

N/A QF50S316X2U

N/A 2 in

N/A 50

N/A 1/2x1/4 in

N/A 2.16 in54.9 mm

N/A

88345005389

N/A QF50X2

N/A 2 in

N/A 50

N/A 1/2x1/4 in

N/A 2.16 in54.9 mm

N/A

88345043191

N/A QF50X2U

N/A 2 in

N/A 50

N/A 1/2x1/4 in

N/A 2.16 in54.9 mm

N/A

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Phone Number

No Preference
1
1/2
11/16
1-1/16
1-1/2
1-1/4
1-1/8
1-11/16
1-15/16
13/16
1-3/16
1-3/4
1-3/8
15/16
1-5/16
1-5/32
1-5/8
1-7/16
1-7/8
1-9/16
2
2-1/16
2-1/2
2-1/4
2-1/8
2-11/16
2-13/16
2-15/16
2-3/16
2-3/4
2-3/8
2-5/16
2-5/8
2-7/16
2-7/8
2-9/16
3
3/4
3/8
3-1/16
3-1/2
3-1/4
3-1/8
3-11/16
3-15/16
3-3/16
3-3/4
3-3/8
3-5/16
3-5/8
3-7/16
3-7/8
3-9/16
4
4-1/4
4-1/8
5/8
7/8
9/16
Pilot
Pilot 1 1/2"
Pilot 1"
Pilot 15/16
Pilot 17/32
Pilot 23/32
Pilot 5/8
Solid

No Preference
1/2 x 1/4
1/2 x1/4
1/2x1/4
1/4 x 1/8
1/4x1/8
1/8 x 1/16
1/8x1/16
1/x1/2
1x1/2
3/16 x 3/32
3/16x3/32
3/32 x 3/64
3/4x3/8
3/8 x 3/16
3/8x3/16
5/16 x 5/32
5/16x5/32
5/8x5/16
7/8x7/16
No Keyway

Bore Size (in)

Coupling Size

Keyway Size (in)

Part Number

Description

Bore Size

Coupling Size

Keyway Size (W x D)

Length thru Bore

CAD