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
88345043690	N/A QF25X7/8U	N/A 7/8 in	N/A 25	N/A 3/16x3/32 in	N/A 1.81 in46 mm	N/A
88345043691	N/A QF25X1-3/16U	N/A 1-3/16 in	N/A 25	N/A 1/4x1/8 in	N/A 1.81 in46 mm	N/A
88345043692	N/A QF25X1-7/16U	N/A 1-7/16 in	N/A 25	N/A 3/8x3/16 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
88345043708	N/A QF50X7/8U	N/A 7/8 in	N/A 50	N/A 3/16x3/32 in	N/A 2.16 in54.9 mm	N/A
88345043709	N/A QF50X1U	N/A 1 in	N/A 50	N/A 1/4x1/8 in	N/A 2.16 in54.9 mm	N/A
88345043710	N/A QF50X1-1/8U	N/A 1-1/8 in	N/A 50	N/A 1/4x1/8 in	N/A 2.16 in54.9 mm	N/A
88345043711	N/A QF50X1-3/16U	N/A 1-3/16 in	N/A 50	N/A 1/4x1/8 in	N/A 2.16 in54.9 mm	N/A
88345043712	N/A QF50X1-1/4U	N/A 1-1/4 in	N/A 50	N/A 1/4x1/8 in	N/A 2.16 in54.9 mm	N/A
88345043713	N/A QF50X1-7/16U	N/A 1-7/16 in	N/A 50	N/A 3/8x3/16 in	N/A 2.16 in54.9 mm	N/A
88345043714	N/A QF50X1-3/4U	N/A 1-3/4 in	N/A 50	N/A 3/8x3/16 in	N/A 2.16 in54.9 mm	N/A
88345043715	N/A QF50X2-3/16U	N/A 2-3/16 in	N/A 50	N/A 1/2x1/4 in	N/A 2.16 in54.9 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
88345043728	N/A QF100X1-7/16	N/A 1-7/16 in	N/A 100	N/A 3/8x3/16 in	N/A 2.46 in62.5 mm	N/A
88345043729	N/A QF100X1-7/16U	N/A 1-7/16 in	N/A 100	N/A 3/8x3/16 in	N/A 2.46 in62.5 mm	N/A
88345043730	N/A QF100X1-5/8U	N/A 1-5/8 in	N/A 100	N/A 3/8x3/16 in	N/A 2.46 in62.5 mm	N/A
88345043731	N/A QF100X1-3/4U	N/A 1-3/4 in	N/A 100	N/A 3/8x3/16 in	N/A 2.46 in62.5 mm	N/A
88345043732	N/A QF100X1-15/16U	N/A 1-15/16 in	N/A 100	N/A 1/2x1/4 in	N/A 2.46 in62.5 mm	N/A
88345043733	N/A QF100X2U	N/A 2 in	N/A 100	N/A 1/2x1/4 in	N/A 2.46 in62.5 mm	N/A
88345043734	N/A QF100X2-3/16U	N/A 2-3/16 in	N/A 100	N/A 1/2x1/4 in	N/A 2.46 in62.5 mm	N/A
88345043735	N/A QF100X2-7/16U	N/A 2-7/16 in	N/A 100	N/A 5/8x5/16 in	N/A 2.46 in62.5 mm	N/A
88345043736	N/A QF100X2-5/8U	N/A 2-5/8 in	N/A 100	N/A 5/8x5/16 in	N/A 2.46 in62.5 mm	N/A
88345043737	N/A QF100X3U	N/A 3 in	N/A 100	N/A 3/4x3/8 in	N/A 2.46 in62.5 mm	N/A
88345043968	N/A QF100S303X1	N/A 1 in	N/A 100	N/A 1/4x1/8 in	N/A 2.46 in62.5 mm	N/A
88345043969	N/A QF100S303X1-1/8	N/A 1-1/8 in	N/A 100	N/A 1/4x1/8 in	N/A 2.46 in62.5 mm	N/A

88345043690

N/A QF25X7/8U

N/A 7/8 in

N/A 25

N/A 3/16x3/32 in

N/A 1.81 in46 mm

N/A

88345043691

N/A QF25X1-3/16U

N/A 1-3/16 in

N/A 25

N/A 1/4x1/8 in

N/A 1.81 in46 mm

N/A

88345043692

N/A QF25X1-7/16U

N/A 1-7/16 in

N/A 25

N/A 3/8x3/16 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

88345043708

N/A QF50X7/8U

N/A 7/8 in

N/A 50

N/A 3/16x3/32 in

N/A 2.16 in54.9 mm

N/A

88345043709

N/A QF50X1U

N/A 1 in

N/A 50

N/A 1/4x1/8 in

N/A 2.16 in54.9 mm

N/A

88345043710

N/A QF50X1-1/8U

N/A 1-1/8 in

N/A 50

N/A 1/4x1/8 in

N/A 2.16 in54.9 mm

N/A

88345043711

N/A QF50X1-3/16U

N/A 1-3/16 in

N/A 50

N/A 1/4x1/8 in

N/A 2.16 in54.9 mm

N/A

88345043712

N/A QF50X1-1/4U

N/A 1-1/4 in

N/A 50

N/A 1/4x1/8 in

N/A 2.16 in54.9 mm

N/A

88345043713

N/A QF50X1-7/16U

N/A 1-7/16 in

N/A 50

N/A 3/8x3/16 in

N/A 2.16 in54.9 mm

N/A

88345043714

N/A QF50X1-3/4U

N/A 1-3/4 in

N/A 50

N/A 3/8x3/16 in

N/A 2.16 in54.9 mm

N/A

88345043715

N/A QF50X2-3/16U

N/A 2-3/16 in

N/A 50

N/A 1/2x1/4 in

N/A 2.16 in54.9 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

88345043728

N/A QF100X1-7/16

N/A 1-7/16 in

N/A 100

N/A 3/8x3/16 in

N/A 2.46 in62.5 mm

N/A

88345043729

N/A QF100X1-7/16U

N/A 1-7/16 in

N/A 100

N/A 3/8x3/16 in

N/A 2.46 in62.5 mm

N/A

88345043730

N/A QF100X1-5/8U

N/A 1-5/8 in

N/A 100

N/A 3/8x3/16 in

N/A 2.46 in62.5 mm

N/A

88345043731

N/A QF100X1-3/4U

N/A 1-3/4 in

N/A 100

N/A 3/8x3/16 in

N/A 2.46 in62.5 mm

N/A

88345043732

N/A QF100X1-15/16U

N/A 1-15/16 in

N/A 100

N/A 1/2x1/4 in

N/A 2.46 in62.5 mm

N/A

88345043733

N/A QF100X2U

N/A 2 in

N/A 100

N/A 1/2x1/4 in

N/A 2.46 in62.5 mm

N/A

88345043734

N/A QF100X2-3/16U

N/A 2-3/16 in

N/A 100

N/A 1/2x1/4 in

N/A 2.46 in62.5 mm

N/A

88345043735

N/A QF100X2-7/16U

N/A 2-7/16 in

N/A 100

N/A 5/8x5/16 in

N/A 2.46 in62.5 mm

N/A

88345043736

N/A QF100X2-5/8U

N/A 2-5/8 in

N/A 100

N/A 5/8x5/16 in

N/A 2.46 in62.5 mm

N/A

88345043737

N/A QF100X3U

N/A 3 in

N/A 100

N/A 3/4x3/8 in

N/A 2.46 in62.5 mm

N/A

88345043968

N/A QF100S303X1

N/A 1 in

N/A 100

N/A 1/4x1/8 in

N/A 2.46 in62.5 mm

N/A

88345043969

N/A QF100S303X1-1/8

N/A 1-1/8 in

N/A 100

N/A 1/4x1/8 in

N/A 2.46 in62.5 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