QUICK FLEX Flanged Spacer Hubs - Inch (Imperial) Bores On The Timken Company

Part Number	Description	Bore Size	Coupling Size	Keyway Size (W x D)	CAD
88345005377	N/A QF50SPHUBXPB	N/A 23/32 in	N/A 50	N/A NKW in	N/A
88345043874	N/A QF50SPHUBX2-3/8U	N/A 2-3/8 in	N/A 50	N/A 5/8x5/16 in	N/A
88345043175	N/A QF50SPHUBX2-3/8	N/A 2-3/8 in	N/A 50	N/A 5/8x5/16 in	N/A
88345043873	N/A QF50SPHUBX2-1/8U	N/A 2-1/8 in	N/A 50	N/A 1/2x1/4 in	N/A
88345043872	N/A QF50SPHUBX2-1/8	N/A 2-1/8 in	N/A 50	N/A 1/2x1/4 in	N/A
88345043871	N/A QF50SPHUBX2-1/4	N/A 2-1/4 in	N/A 50	N/A 1/2x1/4 in	N/A
88345043870	N/A QF50SPHUBX2	N/A 2 in	N/A 50	N/A 1/2x1/4 in	N/A
88345095989	N/A QF50SPHUBX1-7/8U	N/A 1-7/8 in	N/A 50	N/A 1/2x1/4 in	N/A
88345043869	N/A QF50SPHUBX1-7/8	N/A 1-7/8 in	N/A 50	N/A 1/2x1/4 in	N/A
88345043868	N/A QF50SPHUBX1-5/8	N/A 1-5/8 in	N/A 50	N/A 3/8x3/16 in	N/A
88345043867	N/A QF50SPHUBX1-3/8U	N/A 1-3/8 in	N/A 50	N/A 3/8x3/16 in	N/A
88345043866	N/A QF50SPHUBX1-3/8	N/A 1-3/8 in	N/A 50	N/A 3/8x3/16 in	N/A
88345043865	N/A QF50SPHUBX1-3/4U	N/A 2 1/4 in	N/A 50	N/A 1/2x1/4 in	N/A
88345043864	N/A QF50SPHUBX1-1/8U	N/A 1-1/8 in	N/A 50	N/A 1/4x1/8 in	N/A
88345043863	N/A QF50SPHUBX1-1/8	N/A 1-1/8 in	N/A 50	N/A 1/4x1/8 in	N/A
88345043862	N/A QF50SPHUBX1-1/2	N/A 1-1/2 in	N/A 50	N/A 3/8x3/16 in	N/A
88345043861	N/A QF50SPHUBX1	N/A 1 in	N/A 50	N/A 1/4x1/8 in	N/A
88345095957	N/A QF50LSPHUB	N/A 23/32 in	N/A 50	N/A 3/16x3/32 in	N/A
88345045510	N/A QF500SPHUBXPB	N/A 1 7/8 in	N/A 500	N/A NKW in	N/A
88345046143	N/A QF500SPHUBX4-3/8	N/A 4-3/8 in	N/A 500	N/A 1x1/2 in	N/A
88345043857	N/A QF500SPHUBX4-3/4	N/A 4-3/4 in	N/A 500	N/A 1-1/4x5/8 in	N/A
88345043856	N/A QF500SPHUBX4-1/4U	N/A 4-1/4 in	N/A 500	N/A 1x1/2 in	N/A
88345043855	N/A QF500SPHUBX4-1/4	N/A 4-1/4 in	N/A 500	N/A 1x1/2 in	N/A
88345043854	N/A QF500SPHUBX4-1/2	N/A 4-1/2 in	N/A 500	N/A 1x1/2 in	N/A
88345039978	N/A QF500SPHUBX4.5	N/A 4.5 in	N/A 500	N/A 1x1/2 in	N/A

88345005377

N/A QF50SPHUBXPB

N/A 23/32 in

N/A 50

N/A NKW in

N/A

88345043874

N/A QF50SPHUBX2-3/8U

N/A 2-3/8 in

N/A 50

N/A 5/8x5/16 in

N/A

88345043175

N/A QF50SPHUBX2-3/8

N/A 2-3/8 in

N/A 50

N/A 5/8x5/16 in

N/A

88345043873

N/A QF50SPHUBX2-1/8U

N/A 2-1/8 in

N/A 50

N/A 1/2x1/4 in

N/A

88345043872

N/A QF50SPHUBX2-1/8

N/A 2-1/8 in

N/A 50

N/A 1/2x1/4 in

N/A

88345043871

N/A QF50SPHUBX2-1/4

N/A 2-1/4 in

N/A 50

N/A 1/2x1/4 in

N/A

88345043870

N/A QF50SPHUBX2

N/A 2 in

N/A 50

N/A 1/2x1/4 in

N/A

88345095989

N/A QF50SPHUBX1-7/8U

N/A 1-7/8 in

N/A 50

N/A 1/2x1/4 in

N/A

88345043869

N/A QF50SPHUBX1-7/8

N/A 1-7/8 in

N/A 50

N/A 1/2x1/4 in

N/A

88345043868

N/A QF50SPHUBX1-5/8

N/A 1-5/8 in

N/A 50

N/A 3/8x3/16 in

N/A

88345043867

N/A QF50SPHUBX1-3/8U

N/A 1-3/8 in

N/A 50

N/A 3/8x3/16 in

N/A

88345043866

N/A QF50SPHUBX1-3/8

N/A 1-3/8 in

N/A 50

N/A 3/8x3/16 in

N/A

88345043865

N/A QF50SPHUBX1-3/4U

N/A 2 1/4 in

N/A 50

N/A 1/2x1/4 in

N/A

88345043864

N/A QF50SPHUBX1-1/8U

N/A 1-1/8 in

N/A 50

N/A 1/4x1/8 in

N/A

88345043863

N/A QF50SPHUBX1-1/8

N/A 1-1/8 in

N/A 50

N/A 1/4x1/8 in

N/A

88345043862

N/A QF50SPHUBX1-1/2

N/A 1-1/2 in

N/A 50

N/A 3/8x3/16 in

N/A

88345043861

N/A QF50SPHUBX1

N/A 1 in

N/A 50

N/A 1/4x1/8 in

N/A

88345095957

N/A QF50LSPHUB

N/A 23/32 in

N/A 50

N/A 3/16x3/32 in

N/A

88345045510

N/A QF500SPHUBXPB

N/A 1 7/8 in

N/A 500

N/A NKW in

N/A

88345046143

N/A QF500SPHUBX4-3/8

N/A 4-3/8 in

N/A 500

N/A 1x1/2 in

N/A

88345043857

N/A QF500SPHUBX4-3/4

N/A 4-3/4 in

N/A 500

N/A 1-1/4x5/8 in

N/A

88345043856

N/A QF500SPHUBX4-1/4U

N/A 4-1/4 in

N/A 500

N/A 1x1/2 in

N/A

88345043855

N/A QF500SPHUBX4-1/4

N/A 4-1/4 in

N/A 500

N/A 1x1/2 in

N/A

88345043854

N/A QF500SPHUBX4-1/2

N/A 4-1/2 in

N/A 500

N/A 1x1/2 in

N/A

88345039978

N/A QF500SPHUBX4.5

N/A 4.5 in

N/A 500

N/A 1x1/2 in

N/A

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No Preference
1
1 1/2
1 1/8
1 3/4
1 7/8
1-1/16
1-1/2
1-1/4
1-1/8
1-15/16
1-3/16
1-3/4
1-3/8
15/16
1-5/8
17/32
1-7/8
2
2 1/2
2 1/4
2 3/8
2.5
2-1/2
2-1/4
2-1/8
2-15/16
23/32
2-3/4
2-3/8
2-5/8
2-7/8
3
3.325
3/4
3-1/2
3-1/4
3-15/16
3-3/4
3-3/8
3-5/8
3-7/16
3-7/8
4
4.5
4-1/2
4-1/4
4-1/8
4-3/4
4-3/8
5 1/2
5/8
5-3/4
6
6-1/2
7
7/8

Bore Size (in)

Coupling Size

Keyway Size (in)

Part Number

Description

Bore Size

Coupling Size

Keyway Size (W x D)

CAD