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
88345095951	N/A QF100X1-3/8	N/A 1-3/8 in	N/A 100	N/A 5/16x5/32 in	N/A 2.46 in62.5 mm	N/A
88345043727	N/A QF100X1-3/8U	N/A 1-3/8 in	N/A 100	N/A 5/16x5/32 in	N/A 2.46 in62.5 mm	N/A
88345044112	N/A QF175X1-3/8	N/A 1-3/8 in	N/A 175	N/A 5/16x5/32 in	N/A 2.67 in67.8 mm	N/A
88345042967	N/A QF175X1-3/8U	N/A 1-3/8 in	N/A 175	N/A 5/16x5/32 in	N/A 2.67 in67.8 mm	N/A
88345044222	N/A QF250X1-3/8	N/A 1-3/8 in	N/A 250	N/A 5/16x5/32 in	N/A 3.1 in78.7 mm	N/A
88345043197	N/A QF5S303X15/16	N/A 15/16 in	N/A 5	N/A 1/4 x 1/8 in	N/A 1.08 in27.4 mm	N/A
88345044050	N/A QF15S303X15/16	N/A 15/16 in	N/A 15	N/A 1/4 x 1/8 in	N/A 1.34 in34 mm	N/A
88345042895	N/A QF15S303X15/16E	N/A 15/16 in	N/A 15	N/A 7/8x7/16 in	N/A 1.34 in34 mm	N/A
88345042924	N/A QF15X15/16	N/A 15/16 in	N/A 15	N/A 1/4 x 1/8 in	N/A 1.34 in34 mm	N/A
88345044280	N/A QF25X15/16	N/A 15/16 in	N/A 25	N/A 1/4x1/8 in	N/A 1.81 in46 mm	N/A
88345044282	N/A QF25X15/16U	N/A 15/16 in	N/A 25	N/A 1/4x1/8 in	N/A 1.81 in46 mm	N/A
88345044437	N/A QF50X15/16	N/A 15/16 in	N/A 50	N/A 1/4x1/8 in	N/A 2.16 in54.9 mm	N/A
88345044281	N/A QF25X1-5/16	N/A 1-5/16 in	N/A 25	N/A 5/16x5/32 in	N/A 1.81 in46 mm	N/A
88345044438	N/A QF50X1-5/16	N/A 1-5/16 in	N/A 50	N/A 5/16x5/32 in	N/A 2.16 in54.9 mm	N/A
88345043988	N/A QF100X1-5/16	N/A 1-5/16 in	N/A 100	N/A 5/16x5/32 in	N/A 2.46 in62.5 mm	N/A
88345044070	N/A QF15X1-5/32	N/A 1-5/32 in	N/A 15	N/A 1/4x1/8 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
88345005221	N/A QF15X1-5/8	N/A 1-5/8 in	N/A 15	N/A 3/8x3/16 in	N/A 1.34 in34 mm	N/A
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
88345042925	N/A QF15X1-5/8U	N/A 1-5/8 in	N/A 15	N/A 3/8x3/16 in	N/A 1.34 in34 mm	N/A
88345096029	N/A QF25S303X1-5/8	N/A 1-5/8 in	N/A 25	N/A 3/8x3/16 in	N/A 1.81 in46 mm	N/A
88345043071	N/A QF25S303X1-5/8U	N/A 1-5/8 in	N/A 25	N/A 3/8x3/16 in	N/A 1.81 in46 mm	N/A
88345095994	N/A QF25S316X1-5/8	N/A 1-5/8 in	N/A 25	N/A 3/8x3/16 in	N/A 1.81 in46 mm	N/A
88345005312	N/A QF25X1-5/8	N/A 1-5/8 in	N/A 25	N/A 3/8x3/16 in	N/A 1.81 in46 mm	N/A
88345043103	N/A QF25X1-5/8U	N/A 1-5/8 in	N/A 25	N/A 3/8x3/16 in	N/A 1.81 in46 mm	N/A

88345095951

N/A QF100X1-3/8

N/A 1-3/8 in

N/A 100

N/A 5/16x5/32 in

N/A 2.46 in62.5 mm

N/A

88345043727

N/A QF100X1-3/8U

N/A 1-3/8 in

N/A 100

N/A 5/16x5/32 in

N/A 2.46 in62.5 mm

N/A

88345044112

N/A QF175X1-3/8

N/A 1-3/8 in

N/A 175

N/A 5/16x5/32 in

N/A 2.67 in67.8 mm

N/A

88345042967

N/A QF175X1-3/8U

N/A 1-3/8 in

N/A 175

N/A 5/16x5/32 in

N/A 2.67 in67.8 mm

N/A

88345044222

N/A QF250X1-3/8

N/A 1-3/8 in

N/A 250

N/A 5/16x5/32 in

N/A 3.1 in78.7 mm

N/A

88345043197

N/A QF5S303X15/16

N/A 15/16 in

N/A 5

N/A 1/4 x 1/8 in

N/A 1.08 in27.4 mm

N/A

88345044050

N/A QF15S303X15/16

N/A 15/16 in

N/A 15

N/A 1/4 x 1/8 in

N/A 1.34 in34 mm

N/A

88345042895

N/A QF15S303X15/16E

N/A 15/16 in

N/A 15

N/A 7/8x7/16 in

N/A 1.34 in34 mm

N/A

88345042924

N/A QF15X15/16

N/A 15/16 in

N/A 15

N/A 1/4 x 1/8 in

N/A 1.34 in34 mm

N/A

88345044280

N/A QF25X15/16

N/A 15/16 in

N/A 25

N/A 1/4x1/8 in

N/A 1.81 in46 mm

N/A

88345044282

N/A QF25X15/16U

N/A 15/16 in

N/A 25

N/A 1/4x1/8 in

N/A 1.81 in46 mm

N/A

88345044437

N/A QF50X15/16

N/A 15/16 in

N/A 50

N/A 1/4x1/8 in

N/A 2.16 in54.9 mm

N/A

88345044281

N/A QF25X1-5/16

N/A 1-5/16 in

N/A 25

N/A 5/16x5/32 in

N/A 1.81 in46 mm

N/A

88345044438

N/A QF50X1-5/16

N/A 1-5/16 in

N/A 50

N/A 5/16x5/32 in

N/A 2.16 in54.9 mm

N/A

88345043988

N/A QF100X1-5/16

N/A 1-5/16 in

N/A 100

N/A 5/16x5/32 in

N/A 2.46 in62.5 mm

N/A

88345044070

N/A QF15X1-5/32

N/A 1-5/32 in

N/A 15

N/A 1/4x1/8 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

88345005221

N/A QF15X1-5/8

N/A 1-5/8 in

N/A 15

N/A 3/8x3/16 in

N/A 1.34 in34 mm

N/A

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

88345042925

N/A QF15X1-5/8U

N/A 1-5/8 in

N/A 15

N/A 3/8x3/16 in

N/A 1.34 in34 mm

N/A

88345096029

N/A QF25S303X1-5/8

N/A 1-5/8 in

N/A 25

N/A 3/8x3/16 in

N/A 1.81 in46 mm

N/A

88345043071

N/A QF25S303X1-5/8U

N/A 1-5/8 in

N/A 25

N/A 3/8x3/16 in

N/A 1.81 in46 mm

N/A

88345095994

N/A QF25S316X1-5/8

N/A 1-5/8 in

N/A 25

N/A 3/8x3/16 in

N/A 1.81 in46 mm

N/A

88345005312

N/A QF25X1-5/8

N/A 1-5/8 in

N/A 25

N/A 3/8x3/16 in

N/A 1.81 in46 mm

N/A

88345043103

N/A QF25X1-5/8U

N/A 1-5/8 in

N/A 25

N/A 3/8x3/16 in

N/A 1.81 in46 mm

N/A

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First Name ^*
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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