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
88345044118	N/A QF175X2-15/16U	N/A 2-15/16 in	N/A 175	N/A 3/4x3/8 in	N/A 2.67 in67.8 mm	N/A
88345042991	N/A QF175X3-3/16	N/A 3-3/16 in	N/A 175	N/A 3/4x3/8 in	N/A 2.67 in67.8 mm	N/A
88345042992	N/A QF175X3-3/16U	N/A 3-3/16 in	N/A 175	N/A 3/4x3/8 in	N/A 2.67 in67.8 mm	N/A
88345044206	N/A QF250S303X3	N/A 3 in	N/A 250	N/A 3/4x3/8 in	N/A 3.1 in78.7 mm	N/A
88345096402	N/A QF250X3	N/A 3 in	N/A 250	N/A 3/4x3/8 in	N/A 3.1 in78.7 mm	N/A
88345044246	N/A QF250X3U	N/A 3 in	N/A 250	N/A 3/4x3/8 in	N/A 3.1 in78.7 mm	N/A
88345043042	N/A QF250X3-1/4	N/A 3-1/4 in	N/A 250	N/A 3/4x3/8 in	N/A 3.1 in78.7 mm	N/A
88345043043	N/A QF250X3-1/4U	N/A 3-1/4 in	N/A 250	N/A 3/4x3/8 in	N/A 3.1 in78.7 mm	N/A
88345044205	N/A QF250S303X2-7/8	N/A 2-7/8 in	N/A 250	N/A 3/4x3/8 in	N/A 3.1 in78.7 mm	N/A
88345043039	N/A QF250X2-7/8	N/A 2-7/8 in	N/A 250	N/A 3/4x3/8 in	N/A 3.1 in78.7 mm	N/A
88345044236	N/A QF250X2-7/8U	N/A 2-7/8 in	N/A 250	N/A 3/4x3/8 in	N/A 3.1 in78.7 mm	N/A
88345050086	N/A QF250S303X3-1/8	N/A 3-1/8 in	N/A 250	N/A 3/4x3/8 in	N/A 3.1 in78.7 mm	N/A
88345044238	N/A QF250X3-1/8	N/A 3-1/8 in	N/A 250	N/A 3/4x3/8 in	N/A 3.1 in78.7 mm	N/A
88345044203	N/A QF250S303X2-15/16	N/A 2-15/16 in	N/A 250	N/A 3/4x3/8 in	N/A 3.1 in78.7 mm	N/A
88345044229	N/A QF250X2-15/16	N/A 2-15/16 in	N/A 250	N/A 3/4x3/8 in	N/A 3.1 in78.7 mm	N/A
88345043035	N/A QF250X2-15/16U	N/A 2-15/16 in	N/A 250	N/A 3/4x3/8 in	N/A 3.1 in78.7 mm	N/A
88345043215	N/A QF250X3-1/16	N/A 3-1/16 in	N/A 250	N/A 3/4x3/8 in	N/A 3.1 in78.7 mm	N/A
88345044240	N/A QF250X3-3/16	N/A 3-3/16 in	N/A 250	N/A 3/4x3/8 in	N/A 3.1 in78.7 mm	N/A
88345005199	N/A QF15S303X1-1/2	N/A 1-1/2 in	N/A 15	N/A 3/8 x 3/16 in	N/A 1.34 in34 mm	N/A
88345005216	N/A QF15X1-1/2	N/A 1-1/2 in	N/A 15	N/A 3/8 x 3/16 in	N/A 1.34 in34 mm	N/A
88345043677	N/A QF15X1-1/2U	N/A 1-1/2 in	N/A 15	N/A 3/8 x 3/16 in	N/A 1.34 in34 mm	N/A
88345096443	N/A QF25S303X1-1/2	N/A 1-1/2 in	N/A 25	N/A 3/8 x 3/16 in	N/A 1.81 in46 mm	N/A
88345096014	N/A QF25X1-1/2U	N/A 1-1/2 in	N/A 25	N/A 3/8 x 3/16 in	N/A 1.81 in46 mm	N/A
88345042923	N/A QF15X1-3/8E	N/A 1-3/8 in	N/A 15	N/A 3/8x3/16 in	N/A 1.34 in34 mm	N/A
88345032881	N/A QF15S303X1-5/8	N/A 1-5/8 in	N/A 15	N/A 3/8x3/16 in	N/A 1.34 in34 mm	N/A

88345044118

N/A QF175X2-15/16U

N/A 2-15/16 in

N/A 175

N/A 3/4x3/8 in

N/A 2.67 in67.8 mm

N/A

88345042991

N/A QF175X3-3/16

N/A 3-3/16 in

N/A 175

N/A 3/4x3/8 in

N/A 2.67 in67.8 mm

N/A

88345042992

N/A QF175X3-3/16U

N/A 3-3/16 in

N/A 175

N/A 3/4x3/8 in

N/A 2.67 in67.8 mm

N/A

88345044206

N/A QF250S303X3

N/A 3 in

N/A 250

N/A 3/4x3/8 in

N/A 3.1 in78.7 mm

N/A

88345096402

N/A QF250X3

N/A 3 in

N/A 250

N/A 3/4x3/8 in

N/A 3.1 in78.7 mm

N/A

88345044246

N/A QF250X3U

N/A 3 in

N/A 250

N/A 3/4x3/8 in

N/A 3.1 in78.7 mm

N/A

88345043042

N/A QF250X3-1/4

N/A 3-1/4 in

N/A 250

N/A 3/4x3/8 in

N/A 3.1 in78.7 mm

N/A

88345043043

N/A QF250X3-1/4U

N/A 3-1/4 in

N/A 250

N/A 3/4x3/8 in

N/A 3.1 in78.7 mm

N/A

88345044205

N/A QF250S303X2-7/8

N/A 2-7/8 in

N/A 250

N/A 3/4x3/8 in

N/A 3.1 in78.7 mm

N/A

88345043039

N/A QF250X2-7/8

N/A 2-7/8 in

N/A 250

N/A 3/4x3/8 in

N/A 3.1 in78.7 mm

N/A

88345044236

N/A QF250X2-7/8U

N/A 2-7/8 in

N/A 250

N/A 3/4x3/8 in

N/A 3.1 in78.7 mm

N/A

88345050086

N/A QF250S303X3-1/8

N/A 3-1/8 in

N/A 250

N/A 3/4x3/8 in

N/A 3.1 in78.7 mm

N/A

88345044238

N/A QF250X3-1/8

N/A 3-1/8 in

N/A 250

N/A 3/4x3/8 in

N/A 3.1 in78.7 mm

N/A

88345044203

N/A QF250S303X2-15/16

N/A 2-15/16 in

N/A 250

N/A 3/4x3/8 in

N/A 3.1 in78.7 mm

N/A

88345044229

N/A QF250X2-15/16

N/A 2-15/16 in

N/A 250

N/A 3/4x3/8 in

N/A 3.1 in78.7 mm

N/A

88345043035

N/A QF250X2-15/16U

N/A 2-15/16 in

N/A 250

N/A 3/4x3/8 in

N/A 3.1 in78.7 mm

N/A

88345043215

N/A QF250X3-1/16

N/A 3-1/16 in

N/A 250

N/A 3/4x3/8 in

N/A 3.1 in78.7 mm

N/A

88345044240

N/A QF250X3-3/16

N/A 3-3/16 in

N/A 250

N/A 3/4x3/8 in

N/A 3.1 in78.7 mm

N/A

88345005199

N/A QF15S303X1-1/2

N/A 1-1/2 in

N/A 15

N/A 3/8 x 3/16 in

N/A 1.34 in34 mm

N/A

88345005216

N/A QF15X1-1/2

N/A 1-1/2 in

N/A 15

N/A 3/8 x 3/16 in

N/A 1.34 in34 mm

N/A

88345043677

N/A QF15X1-1/2U

N/A 1-1/2 in

N/A 15

N/A 3/8 x 3/16 in

N/A 1.34 in34 mm

N/A

88345096443

N/A QF25S303X1-1/2

N/A 1-1/2 in

N/A 25

N/A 3/8 x 3/16 in

N/A 1.81 in46 mm

N/A

88345096014

N/A QF25X1-1/2U

N/A 1-1/2 in

N/A 25

N/A 3/8 x 3/16 in

N/A 1.81 in46 mm

N/A

88345042923

N/A QF15X1-3/8E

N/A 1-3/8 in

N/A 15

N/A 3/8x3/16 in

N/A 1.34 in34 mm

N/A

88345032881

N/A QF15S303X1-5/8

N/A 1-5/8 in

N/A 15

N/A 3/8x3/16 in

N/A 1.34 in34 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