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
88345044443	N/A QF50X2-1/4NK	N/A 2-1/4 in	N/A 50	N/A 1/2x1/4 in	N/A 2.16 in54.9 mm	N/A
88345043186	N/A QF50X2-1/4U	N/A 2-1/4 in	N/A 50	N/A 1/2x1/4 in	N/A 2.16 in54.9 mm	N/A
88345095889	N/A QF100S303X2-1/4	N/A 2-1/4 in	N/A 100	N/A 1/2x1/4 in	N/A 2.46 in62.5 mm	N/A
88345005162	N/A QF100X2-1/4	N/A 2-1/4 in	N/A 100	N/A 1/2x1/4 in	N/A 2.46 in62.5 mm	N/A
88345043990	N/A QF100X2-1/4E	N/A 2-1/4 in	N/A 100	N/A 5/8x5/16 in	N/A 2.46 in62.5 mm	N/A
88345043223	N/A QF100X2-1/4U	N/A 2-1/4 in	N/A 100	N/A 1/2x1/4 in	N/A 2.46 in62.5 mm	N/A
88345046147	N/A QF175S303X2-1/4	N/A 2-1/4 in	N/A 175	N/A 1/2x1/4 in	N/A 2.67 in67.8 mm	N/A
88345042974	N/A QF175X2-1/4	N/A 2-1/4 in	N/A 175	N/A 1/2x1/4 in	N/A 2.67 in67.8 mm	N/A
88345043250	N/A QF175X2-1/4E	N/A 2-1/4 in	N/A 175	N/A 5/8x5/16 in	N/A 2.67 in67.8 mm	N/A
88345042975	N/A QF175X2-1/4U	N/A 2-1/4 in	N/A 175	N/A 1/2x1/4 in	N/A 2.67 in67.8 mm	N/A
88345043034	N/A QF250X2-1/4	N/A 2-1/4 in	N/A 250	N/A 1/2x1/4 in	N/A 3.1 in78.7 mm	N/A
88345044226	N/A QF250X2-1/4U	N/A 2-1/4 in	N/A 250	N/A 1/2x1/4 in	N/A 3.1 in78.7 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
88345095896	N/A QF50S303X2-1/8	N/A 2-1/8 in	N/A 50	N/A 1/2x1/4 in	N/A 2.16 in54.9 mm	N/A
88345005392	N/A QF50X2-1/8	N/A 2-1/8 in	N/A 50	N/A 1/2x1/4 in	N/A 2.16 in54.9 mm	N/A
88345044444	N/A QF50X2-1/8E	N/A 2-1/8 in	N/A 50	N/A 5/8x5/16 in	N/A 2.16 in54.9 mm	N/A
88345043187	N/A QF50X2-1/8U	N/A 2-1/8 in	N/A 50	N/A 1/2x1/4 in	N/A 2.16 in54.9 mm	N/A
88345042838	N/A QF100S303X2-1/8	N/A 2-1/8 in	N/A 100	N/A 1/2x1/4 in	N/A 2.46 in62.5 mm	N/A
88345043975	N/A QF100S303X2-1/8U	N/A 2-1/8 in	N/A 100	N/A 1/2x1/4 in	N/A 2.46 in62.5 mm	N/A
88345031047	N/A QF100X2-1/8	N/A 2-1/8 in	N/A 100	N/A 1/2x1/4 in	N/A 2.46 in62.5 mm	N/A
88345042871	N/A QF100X2-1/8U	N/A 2-1/8 in	N/A 100	N/A 1/2x1/4 in	N/A 2.46 in62.5 mm	N/A
88345096026	N/A QF175X2-1/8	N/A 2-1/8 in	N/A 175	N/A 1/2x1/4 in	N/A 2.67 in67.8 mm	N/A

88345044443

N/A QF50X2-1/4NK

N/A 2-1/4 in

N/A 50

N/A 1/2x1/4 in

N/A 2.16 in54.9 mm

N/A

88345043186

N/A QF50X2-1/4U

N/A 2-1/4 in

N/A 50

N/A 1/2x1/4 in

N/A 2.16 in54.9 mm

N/A

88345095889

N/A QF100S303X2-1/4

N/A 2-1/4 in

N/A 100

N/A 1/2x1/4 in

N/A 2.46 in62.5 mm

N/A

88345005162

N/A QF100X2-1/4

N/A 2-1/4 in

N/A 100

N/A 1/2x1/4 in

N/A 2.46 in62.5 mm

N/A

88345043990

N/A QF100X2-1/4E

N/A 2-1/4 in

N/A 100

N/A 5/8x5/16 in

N/A 2.46 in62.5 mm

N/A

88345043223

N/A QF100X2-1/4U

N/A 2-1/4 in

N/A 100

N/A 1/2x1/4 in

N/A 2.46 in62.5 mm

N/A

88345046147

N/A QF175S303X2-1/4

N/A 2-1/4 in

N/A 175

N/A 1/2x1/4 in

N/A 2.67 in67.8 mm

N/A

88345042974

N/A QF175X2-1/4

N/A 2-1/4 in

N/A 175

N/A 1/2x1/4 in

N/A 2.67 in67.8 mm

N/A

88345043250

N/A QF175X2-1/4E

N/A 2-1/4 in

N/A 175

N/A 5/8x5/16 in

N/A 2.67 in67.8 mm

N/A

88345042975

N/A QF175X2-1/4U

N/A 2-1/4 in

N/A 175

N/A 1/2x1/4 in

N/A 2.67 in67.8 mm

N/A

88345043034

N/A QF250X2-1/4

N/A 2-1/4 in

N/A 250

N/A 1/2x1/4 in

N/A 3.1 in78.7 mm

N/A

88345044226

N/A QF250X2-1/4U

N/A 2-1/4 in

N/A 250

N/A 1/2x1/4 in

N/A 3.1 in78.7 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

88345095896

N/A QF50S303X2-1/8

N/A 2-1/8 in

N/A 50

N/A 1/2x1/4 in

N/A 2.16 in54.9 mm

N/A

88345005392

N/A QF50X2-1/8

N/A 2-1/8 in

N/A 50

N/A 1/2x1/4 in

N/A 2.16 in54.9 mm

N/A

88345044444

N/A QF50X2-1/8E

N/A 2-1/8 in

N/A 50

N/A 5/8x5/16 in

N/A 2.16 in54.9 mm

N/A

88345043187

N/A QF50X2-1/8U

N/A 2-1/8 in

N/A 50

N/A 1/2x1/4 in

N/A 2.16 in54.9 mm

N/A

88345042838

N/A QF100S303X2-1/8

N/A 2-1/8 in

N/A 100

N/A 1/2x1/4 in

N/A 2.46 in62.5 mm

N/A

88345043975

N/A QF100S303X2-1/8U

N/A 2-1/8 in

N/A 100

N/A 1/2x1/4 in

N/A 2.46 in62.5 mm

N/A

88345031047

N/A QF100X2-1/8

N/A 2-1/8 in

N/A 100

N/A 1/2x1/4 in

N/A 2.46 in62.5 mm

N/A

88345042871

N/A QF100X2-1/8U

N/A 2-1/8 in

N/A 100

N/A 1/2x1/4 in

N/A 2.46 in62.5 mm

N/A

88345096026

N/A QF175X2-1/8

N/A 2-1/8 in

N/A 175

N/A 1/2x1/4 in

N/A 2.67 in67.8 mm

N/A

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First Name ^*
Last Name ^*
Company ^*
Department ^*
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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