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
88345042971	N/A QF175X1-7/8U	N/A 1-7/8 in	N/A 175	N/A 1/2x1/4 in	N/A 2.67 in67.8 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
88345044115	N/A QF175X2-1/8U	N/A 2-1/8 in	N/A 175	N/A 1/2x1/4 in	N/A 2.67 in67.8 mm	N/A
88345042964	N/A QF175X1-15/16	N/A 1-15/16 in	N/A 175	N/A 1/2x1/4 in	N/A 2.67 in67.8 mm	N/A
88345049684	N/A QF175X2-1/16	N/A 2-1/16 in	N/A 175	N/A 1/2x1/4 in	N/A 2.67 in67.8 mm	N/A
88345044119	N/A QF175X2-3/16	N/A 2-3/16 in	N/A 175	N/A 1/2x1/4 in	N/A 2.67 in67.8 mm	N/A
88345043033	N/A QF250X2	N/A 2 in	N/A 250	N/A 1/2x1/4 in	N/A 3.1 in78.7 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
88345044223	N/A QF250X1-7/8	N/A 1-7/8 in	N/A 250	N/A 1/2x1/4 in	N/A 3.1 in78.7 mm	N/A
88345044202	N/A QF250S303X2-1/8	N/A 2-1/8 in	N/A 250	N/A 1/2x1/4 in	N/A 3.1 in78.7 mm	N/A
88345044227	N/A QF250X2-1/8	N/A 2-1/8 in	N/A 250	N/A 1/2x1/4 in	N/A 3.1 in78.7 mm	N/A
88345044228	N/A QF250X2-1/8U	N/A 2-1/8 in	N/A 250	N/A 1/2x1/4 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
88345005198	N/A QF15S303X1	N/A 1 in	N/A 15	N/A 1/4 x 1/8 in	N/A 1.34 in34 mm	N/A
88345044059	N/A QF15S304X1	N/A 1 in	N/A 15	N/A 1/4 x 1/8 in	N/A 1.34 in34 mm	N/A
88345005215	N/A QF15X1	N/A 1 in	N/A 15	N/A 1/4 x 1/8 in	N/A 1.34 in34 mm	N/A
88345096081	N/A QF15X1BO	N/A 1 in	N/A 15	N/A 1/4 x 1/8 in	N/A 1.34 in34 mm	N/A
88345042927	N/A QF15X1U	N/A 1 in	N/A 15	N/A 1/4 x 1/8 in	N/A 1.34 in34 mm	N/A
88345005200	N/A QF15S303X1-1/4	N/A 1-1/4 in	N/A 15	N/A 1/4 x 1/8 in	N/A 1.34 in34 mm	N/A
88345044048	N/A QF15S303X1-1/4U	N/A 1-1/4 in	N/A 15	N/A 1/4 x 1/8 in	N/A 1.34 in34 mm	N/A
88345049224	N/A QF15S316X1-1/4	N/A 1-1/4 in	N/A 15	N/A 1/4 x 1/8 in	N/A 1.34 in34 mm	N/A
88345005217	N/A QF15X1-1/4	N/A 1-1/4 in	N/A 15	N/A 1/4 x 1/8 in	N/A 1.34 in34 mm	N/A
88345044063	N/A QF15X1-1/4SH	N/A 1-1/4 in	N/A 15	N/A 1/4 x 1/8 in	N/A 1.34 in34 mm	N/A
88345095985	N/A QF15X7/8E	N/A 7/8 in	N/A 15	N/A 1/4 x 1/8 in	N/A 1.34 in34 mm	N/A

88345042971

N/A QF175X1-7/8U

N/A 1-7/8 in

N/A 175

N/A 1/2x1/4 in

N/A 2.67 in67.8 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

88345044115

N/A QF175X2-1/8U

N/A 2-1/8 in

N/A 175

N/A 1/2x1/4 in

N/A 2.67 in67.8 mm

N/A

88345042964

N/A QF175X1-15/16

N/A 1-15/16 in

N/A 175

N/A 1/2x1/4 in

N/A 2.67 in67.8 mm

N/A

88345049684

N/A QF175X2-1/16

N/A 2-1/16 in

N/A 175

N/A 1/2x1/4 in

N/A 2.67 in67.8 mm

N/A

88345044119

N/A QF175X2-3/16

N/A 2-3/16 in

N/A 175

N/A 1/2x1/4 in

N/A 2.67 in67.8 mm

N/A

88345043033

N/A QF250X2

N/A 2 in

N/A 250

N/A 1/2x1/4 in

N/A 3.1 in78.7 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

88345044223

N/A QF250X1-7/8

N/A 1-7/8 in

N/A 250

N/A 1/2x1/4 in

N/A 3.1 in78.7 mm

N/A

88345044202

N/A QF250S303X2-1/8

N/A 2-1/8 in

N/A 250

N/A 1/2x1/4 in

N/A 3.1 in78.7 mm

N/A

88345044227

N/A QF250X2-1/8

N/A 2-1/8 in

N/A 250

N/A 1/2x1/4 in

N/A 3.1 in78.7 mm

N/A

88345044228

N/A QF250X2-1/8U

N/A 2-1/8 in

N/A 250

N/A 1/2x1/4 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

88345005198

N/A QF15S303X1

N/A 1 in

N/A 15

N/A 1/4 x 1/8 in

N/A 1.34 in34 mm

N/A

88345044059

N/A QF15S304X1

N/A 1 in

N/A 15

N/A 1/4 x 1/8 in

N/A 1.34 in34 mm

N/A

88345005215

N/A QF15X1

N/A 1 in

N/A 15

N/A 1/4 x 1/8 in

N/A 1.34 in34 mm

N/A

88345096081

N/A QF15X1BO

N/A 1 in

N/A 15

N/A 1/4 x 1/8 in

N/A 1.34 in34 mm

N/A

88345042927

N/A QF15X1U

N/A 1 in

N/A 15

N/A 1/4 x 1/8 in

N/A 1.34 in34 mm

N/A

88345005200

N/A QF15S303X1-1/4

N/A 1-1/4 in

N/A 15

N/A 1/4 x 1/8 in

N/A 1.34 in34 mm

N/A

88345044048

N/A QF15S303X1-1/4U

N/A 1-1/4 in

N/A 15

N/A 1/4 x 1/8 in

N/A 1.34 in34 mm

N/A

88345049224

N/A QF15S316X1-1/4

N/A 1-1/4 in

N/A 15

N/A 1/4 x 1/8 in

N/A 1.34 in34 mm

N/A

88345005217

N/A QF15X1-1/4

N/A 1-1/4 in

N/A 15

N/A 1/4 x 1/8 in

N/A 1.34 in34 mm

N/A

88345044063

N/A QF15X1-1/4SH

N/A 1-1/4 in

N/A 15

N/A 1/4 x 1/8 in

N/A 1.34 in34 mm

N/A

88345095985

N/A QF15X7/8E

N/A 7/8 in

N/A 15

N/A 1/4 x 1/8 in

N/A 1.34 in34 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