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
88345044251	N/A QF250X55MM	N/A 55 mm	N/A 250	N/A 16x4.3	N/A 3.1 in78.7 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
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
88345044256	N/A QF250X70MM	N/A 70 mm	N/A 250	N/A 20x4.9	N/A 3.1 in78.7 mm	N/A
88345041045	N/A QF250X70MMU	N/A 70 mm	N/A 250	N/A 20x4.9	N/A 3.1 in78.7 mm	N/A
88345044213	N/A QF250S303X75MM	N/A 75 mm	N/A 250	N/A 20x4.9	N/A 3.1 in78.7 mm	N/A
88345043056	N/A QF250X75MM	N/A 75 mm	N/A 250	N/A 20x4.9	N/A 3.1 in78.7 mm	N/A
88345047267	N/A QF250X75MMU	N/A 75 mm	N/A 250	N/A 20x4.9	N/A 3.1 in78.7 mm	N/A
88345044257	N/A QF250X76MM	N/A 76 mm	N/A 250	N/A 22x5.4	N/A 3.1 in78.7 mm	N/A
88345044214	N/A QF250S303X80MM	N/A 80 mm	N/A 250	N/A 22x5.4	N/A 3.1 in78.7 mm	N/A
88345040938	N/A QF250X80MM	N/A 80 mm	N/A 250	N/A 22x5.4	N/A 3.1 in78.7 mm	N/A
88345095931	N/A QF250X85MM	N/A 85 mm	N/A 250	N/A 22x5.4	N/A 3.1 in78.7 mm	N/A
88345047268	N/A QF250X85MMU	N/A 85 mm	N/A 250	N/A 22x5.4	N/A 3.1 in78.7 mm	N/A
88345043057	N/A QF250X90MM	N/A 90 mm	N/A 250	N/A 25x5.4	N/A 3.1 in78.7 mm	N/A
88345044258	N/A QF250X90MMU	N/A 90 mm	N/A 250	N/A 25x5.4	N/A 3.1 in78.7 mm	N/A
88345044215	N/A QF250S303X92MM	N/A 92 mm	N/A 250	N/A 25x5.4	N/A 3.1 in78.7 mm	N/A
88345044216	N/A QF250S303X95MM	N/A 95 mm	N/A 250	N/A 25x5.4	N/A 3.1 in78.7 mm	N/A
88345044259	N/A QF250X95MM	N/A 95 mm	N/A 250	N/A 25x5.4	N/A 3.1 in78.7 mm	N/A
88345044201	N/A QF250S303X100MM	N/A 100 mm	N/A 250	N/A 28x6.4	N/A 3.1 in78.7 mm	N/A
88345043031	N/A QF250X100MM	N/A 100 mm	N/A 250	N/A 28x6.4	N/A 3.1 in78.7 mm	N/A
88345043032	N/A QF250X100MMU	N/A 100 mm	N/A 250	N/A 28x6.4	N/A 3.1 in78.7 mm	N/A
88345043151	N/A QF500X50MM	N/A 50 mm	N/A 500	N/A 14x3.8	N/A 3.75 in95.3 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

88345044251

N/A QF250X55MM

N/A 55 mm

N/A 250

N/A 16x4.3

N/A 3.1 in78.7 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

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

88345044256

N/A QF250X70MM

N/A 70 mm

N/A 250

N/A 20x4.9

N/A 3.1 in78.7 mm

N/A

88345041045

N/A QF250X70MMU

N/A 70 mm

N/A 250

N/A 20x4.9

N/A 3.1 in78.7 mm

N/A

88345044213

N/A QF250S303X75MM

N/A 75 mm

N/A 250

N/A 20x4.9

N/A 3.1 in78.7 mm

N/A

88345043056

N/A QF250X75MM

N/A 75 mm

N/A 250

N/A 20x4.9

N/A 3.1 in78.7 mm

N/A

88345047267

N/A QF250X75MMU

N/A 75 mm

N/A 250

N/A 20x4.9

N/A 3.1 in78.7 mm

N/A

88345044257

N/A QF250X76MM

N/A 76 mm

N/A 250

N/A 22x5.4

N/A 3.1 in78.7 mm

N/A

88345044214

N/A QF250S303X80MM

N/A 80 mm

N/A 250

N/A 22x5.4

N/A 3.1 in78.7 mm

N/A

88345040938

N/A QF250X80MM

N/A 80 mm

N/A 250

N/A 22x5.4

N/A 3.1 in78.7 mm

N/A

88345095931

N/A QF250X85MM

N/A 85 mm

N/A 250

N/A 22x5.4

N/A 3.1 in78.7 mm

N/A

88345047268

N/A QF250X85MMU

N/A 85 mm

N/A 250

N/A 22x5.4

N/A 3.1 in78.7 mm

N/A

88345043057

N/A QF250X90MM

N/A 90 mm

N/A 250

N/A 25x5.4

N/A 3.1 in78.7 mm

N/A

88345044258

N/A QF250X90MMU

N/A 90 mm

N/A 250

N/A 25x5.4

N/A 3.1 in78.7 mm

N/A

88345044215

N/A QF250S303X92MM

N/A 92 mm

N/A 250

N/A 25x5.4

N/A 3.1 in78.7 mm

N/A

88345044216

N/A QF250S303X95MM

N/A 95 mm

N/A 250

N/A 25x5.4

N/A 3.1 in78.7 mm

N/A

88345044259

N/A QF250X95MM

N/A 95 mm

N/A 250

N/A 25x5.4

N/A 3.1 in78.7 mm

N/A

88345044201

N/A QF250S303X100MM

N/A 100 mm

N/A 250

N/A 28x6.4

N/A 3.1 in78.7 mm

N/A

88345043031

N/A QF250X100MM

N/A 100 mm

N/A 250

N/A 28x6.4

N/A 3.1 in78.7 mm

N/A

88345043032

N/A QF250X100MMU

N/A 100 mm

N/A 250

N/A 28x6.4

N/A 3.1 in78.7 mm

N/A

88345043151

N/A QF500X50MM

N/A 50 mm

N/A 500

N/A 14x3.8

N/A 3.75 in95.3 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

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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