QUICK FLEX Standard Hubs with Keyway - Metric Bores On The Timken Company

Part Number	Description	Bore Size	Coupling Size	Keyway Size (mm)	Length thru Bore	CAD
88345044212	N/A QF250S303X65MM	N/A 65 mm	N/A 250	N/A 18x4.4	N/A 3.1 in78.7 mm	N/A
88345044254	N/A QF250X65MM	N/A 65 mm	N/A 250	N/A 18x4.4	N/A 3.1 in78.7 mm	N/A
88345043986	N/A QF100S303X65MM	N/A 65 mm	N/A 100	N/A 18x4.4	N/A 2.46 in62.5 mm	N/A
88345005175	N/A QF100X65MM	N/A 65 mm	N/A 100	N/A 18x4.4	N/A 2.46 in62.5 mm	N/A
88345043744	N/A QF100X65MMU	N/A 65 mm	N/A 100	N/A 18x4.4	N/A 2.46 in62.5 mm	N/A
88345044104	N/A QF175S303X65MM	N/A 65 mm	N/A 175	N/A 18x4.4	N/A 2.67 in67.8 mm	N/A
88345095850	N/A QF175X65MM	N/A 65 mm	N/A 175	N/A 18x4.4	N/A 2.67 in67.8 mm	N/A
88345044141	N/A QF175X65MMU	N/A 65 mm	N/A 175	N/A 18x4.4	N/A 2.67 in67.8 mm	N/A
88345044140	N/A QF175X65MME	N/A 65 mm	N/A 175	N/A 20 x 4.9	N/A 2.67 in67.8 mm	N/A
88345096457	N/A QF100X63MM	N/A 63 mm	N/A 100	N/A 18x4.4	N/A 2.46 in62.5 mm	N/A
88345040989	N/A QF175X60MM	N/A 60 mm	N/A 175	N/A 18x4.4	N/A 2.67 in67.8 mm	N/A
88345044211	N/A QF250S303X60MM	N/A 60 mm	N/A 250	N/A 18x4.4	N/A 3.1 in78.7 mm	N/A
88345044253	N/A QF250X60MM	N/A 60 mm	N/A 250	N/A 18x4.4	N/A 3.1 in78.7 mm	N/A
88345044407	N/A QF500X60MMU	N/A 60 mm	N/A 500	N/A 18x4.4	N/A 3.75 in95.3 mm	N/A
88345043959	N/A QF1000X60MM	N/A 60 mm	N/A 1000	N/A 18x4.4	N/A 4.6 in116.8 mm	N/A
88345043167	N/A QF50S303X60MM	N/A 60 mm	N/A 50	N/A 18x4.4	N/A 2.16 in54.9 mm	N/A
88345031045	N/A QF50X60MM	N/A 60 mm	N/A 50	N/A 18x4.4	N/A 2.16 in54.9 mm	N/A
88345041092	N/A QF50X60MMU	N/A 60 mm	N/A 50	N/A 18x4.4	N/A 2.16 in54.9 mm	N/A
88345042846	N/A QF100S303X60MM	N/A 60 mm	N/A 100	N/A 18x4.4	N/A 2.46 in62.5 mm	N/A
88345005174	N/A QF100X60MM	N/A 60 mm	N/A 100	N/A 18x4.4	N/A 2.46 in62.5 mm	N/A
88345043743	N/A QF100X60MMU	N/A 60 mm	N/A 100	N/A 18x4.4	N/A 2.46 in62.5 mm	N/A
88345044139	N/A QF175X58MM	N/A 58 mm	N/A 175	N/A 16x4.3	N/A 2.67 in67.8 mm	N/A
88345044138	N/A QF175X56MMU	N/A 56 mm	N/A 175	N/A 16x4.3	N/A 2.67 in67.8 mm	N/A
88345043003	N/A QF175X55MM	N/A 55 mm	N/A 175	N/A 16x4.3	N/A 2.67 in67.8 mm	N/A
88345043005	N/A QF175X55MMU	N/A 55 mm	N/A 175	N/A 16x4.3	N/A 2.67 in67.8 mm	N/A

88345044212

N/A QF250S303X65MM

N/A 65 mm

N/A 250

N/A 18x4.4

N/A 3.1 in78.7 mm

N/A

88345044254

N/A QF250X65MM

N/A 65 mm

N/A 250

N/A 18x4.4

N/A 3.1 in78.7 mm

N/A

88345043986

N/A QF100S303X65MM

N/A 65 mm

N/A 100

N/A 18x4.4

N/A 2.46 in62.5 mm

N/A

88345005175

N/A QF100X65MM

N/A 65 mm

N/A 100

N/A 18x4.4

N/A 2.46 in62.5 mm

N/A

88345043744

N/A QF100X65MMU

N/A 65 mm

N/A 100

N/A 18x4.4

N/A 2.46 in62.5 mm

N/A

88345044104

N/A QF175S303X65MM

N/A 65 mm

N/A 175

N/A 18x4.4

N/A 2.67 in67.8 mm

N/A

88345095850

N/A QF175X65MM

N/A 65 mm

N/A 175

N/A 18x4.4

N/A 2.67 in67.8 mm

N/A

88345044141

N/A QF175X65MMU

N/A 65 mm

N/A 175

N/A 18x4.4

N/A 2.67 in67.8 mm

N/A

88345044140

N/A QF175X65MME

N/A 65 mm

N/A 175

N/A 20 x 4.9

N/A 2.67 in67.8 mm

N/A

88345096457

N/A QF100X63MM

N/A 63 mm

N/A 100

N/A 18x4.4

N/A 2.46 in62.5 mm

N/A

88345040989

N/A QF175X60MM

N/A 60 mm

N/A 175

N/A 18x4.4

N/A 2.67 in67.8 mm

N/A

88345044211

N/A QF250S303X60MM

N/A 60 mm

N/A 250

N/A 18x4.4

N/A 3.1 in78.7 mm

N/A

88345044253

N/A QF250X60MM

N/A 60 mm

N/A 250

N/A 18x4.4

N/A 3.1 in78.7 mm

N/A

88345044407

N/A QF500X60MMU

N/A 60 mm

N/A 500

N/A 18x4.4

N/A 3.75 in95.3 mm

N/A

88345043959

N/A QF1000X60MM

N/A 60 mm

N/A 1000

N/A 18x4.4

N/A 4.6 in116.8 mm

N/A

88345043167

N/A QF50S303X60MM

N/A 60 mm

N/A 50

N/A 18x4.4

N/A 2.16 in54.9 mm

N/A

88345031045

N/A QF50X60MM

N/A 60 mm

N/A 50

N/A 18x4.4

N/A 2.16 in54.9 mm

N/A

88345041092

N/A QF50X60MMU

N/A 60 mm

N/A 50

N/A 18x4.4

N/A 2.16 in54.9 mm

N/A

88345042846

N/A QF100S303X60MM

N/A 60 mm

N/A 100

N/A 18x4.4

N/A 2.46 in62.5 mm

N/A

88345005174

N/A QF100X60MM

N/A 60 mm

N/A 100

N/A 18x4.4

N/A 2.46 in62.5 mm

N/A

88345043743

N/A QF100X60MMU

N/A 60 mm

N/A 100

N/A 18x4.4

N/A 2.46 in62.5 mm

N/A

88345044139

N/A QF175X58MM

N/A 58 mm

N/A 175

N/A 16x4.3

N/A 2.67 in67.8 mm

N/A

88345044138

N/A QF175X56MMU

N/A 56 mm

N/A 175

N/A 16x4.3

N/A 2.67 in67.8 mm

N/A

88345043003

N/A QF175X55MM

N/A 55 mm

N/A 175

N/A 16x4.3

N/A 2.67 in67.8 mm

N/A

88345043005

N/A QF175X55MMU

N/A 55 mm

N/A 175

N/A 16x4.3

N/A 2.67 in67.8 mm

N/A

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No Preference
10x3.3
12 x 3.3
12x3.3
14x3.8
16 x 4.3
16x4.3
18x4.4
20 x 4.9
20x4.9
22 x 5.4
22x5.4
25x5.4
28x6.4
32x7.4
36x8.4
3x1.4
40x9.4
45x10.4
4x1.8
50x11.4
56x12.4
5x2.3
6x2.8
8 x 3.3
8x3.3

Bore Size (mm)

Coupling Size

Keyway Size

Part Number

Description

Bore Size

Coupling Size

Keyway Size (mm)

Length thru Bore

CAD