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
88345043192	N/A QF50X40MMU	N/A 40 mm	N/A 50	N/A 12x3.3	N/A 2.16 in54.9 mm	N/A
88345031041	N/A QF50X42MM	N/A 42 mm	N/A 50	N/A 12x3.3	N/A 2.16 in54.9 mm	N/A
88345043722	N/A QF50X42MMU	N/A 42 mm	N/A 50	N/A 12x3.3	N/A 2.16 in54.9 mm	N/A
88345031042	N/A QF50X45MM	N/A 45 mm	N/A 50	N/A 14x3.8	N/A 2.16 in54.9 mm	N/A
88345043723	N/A QF50X45MMU	N/A 45 mm	N/A 50	N/A 14x3.8	N/A 2.16 in54.9 mm	N/A
88345039972	N/A QF50X48MM	N/A 48 mm	N/A 50	N/A 14x3.8	N/A 2.16 in54.9 mm	N/A
88345043724	N/A QF50X48MMU	N/A 48 mm	N/A 50	N/A 14x3.8	N/A 2.16 in54.9 mm	N/A
88345031043	N/A QF50X50MM	N/A 50 mm	N/A 50	N/A 14x3.8	N/A 2.16 in54.9 mm	N/A
88345096031	N/A QF50X50MME	N/A 50 mm	N/A 50	N/A 16 x 4.3	N/A 2.16 in54.9 mm	N/A
88345043725	N/A QF50X50MMU	N/A 50 mm	N/A 50	N/A 14x3.8	N/A 2.16 in54.9 mm	N/A
88345045805	N/A QF50X52MM	N/A 52 mm	N/A 50	N/A 16x4.3	N/A 2.16 in54.9 mm	N/A
88345031044	N/A QF50X55MM	N/A 55 mm	N/A 50	N/A 16x4.3	N/A 2.16 in54.9 mm	N/A
88345043726	N/A QF50X55MMU	N/A 55 mm	N/A 50	N/A 16x4.3	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
88345046040	N/A QF5S303X10MM	N/A 10 mm	N/A 5	N/A 3x1.4	N/A 1.08 in27.4 mm	N/A
88345032894	N/A QF5S303X11MM	N/A 11 mm	N/A 5	N/A 4x1.8	N/A 1.08 in27.4 mm	N/A
88345032895	N/A QF5S303X12MM	N/A 12 mm	N/A 5	N/A 4x1.8	N/A 1.08 in27.4 mm	N/A
88345032896	N/A QF5S303X14MM	N/A 14 mm	N/A 5	N/A 5x2.3	N/A 1.08 in27.4 mm	N/A
88345032897	N/A QF5S303X15MM	N/A 15 mm	N/A 5	N/A 5x2.3	N/A 1.08 in27.4 mm	N/A
88345032898	N/A QF5S303X16MM	N/A 16 mm	N/A 5	N/A 5x2.3	N/A 1.08 in27.4 mm	N/A
88345046346	N/A QF5S303X17MM	N/A 17 mm	N/A 5	N/A 5x2.3	N/A 1.08 in27.4 mm	N/A
88345046177	N/A QF5S303X17MMU	N/A 17 mm	N/A 5	N/A 5x2.3	N/A 1.08 in27.4 mm	N/A
88345032899	N/A QF5S303X18MM	N/A 18 mm	N/A 5	N/A 6x2.8	N/A 1.08 in27.4 mm	N/A
88345046178	N/A QF5S303X18MMU	N/A 18 mm	N/A 5	N/A 6x2.8	N/A 1.08 in27.4 mm	N/A

88345043192

N/A QF50X40MMU

N/A 40 mm

N/A 50

N/A 12x3.3

N/A 2.16 in54.9 mm

N/A

88345031041

N/A QF50X42MM

N/A 42 mm

N/A 50

N/A 12x3.3

N/A 2.16 in54.9 mm

N/A

88345043722

N/A QF50X42MMU

N/A 42 mm

N/A 50

N/A 12x3.3

N/A 2.16 in54.9 mm

N/A

88345031042

N/A QF50X45MM

N/A 45 mm

N/A 50

N/A 14x3.8

N/A 2.16 in54.9 mm

N/A

88345043723

N/A QF50X45MMU

N/A 45 mm

N/A 50

N/A 14x3.8

N/A 2.16 in54.9 mm

N/A

88345039972

N/A QF50X48MM

N/A 48 mm

N/A 50

N/A 14x3.8

N/A 2.16 in54.9 mm

N/A

88345043724

N/A QF50X48MMU

N/A 48 mm

N/A 50

N/A 14x3.8

N/A 2.16 in54.9 mm

N/A

88345031043

N/A QF50X50MM

N/A 50 mm

N/A 50

N/A 14x3.8

N/A 2.16 in54.9 mm

N/A

88345096031

N/A QF50X50MME

N/A 50 mm

N/A 50

N/A 16 x 4.3

N/A 2.16 in54.9 mm

N/A

88345043725

N/A QF50X50MMU

N/A 50 mm

N/A 50

N/A 14x3.8

N/A 2.16 in54.9 mm

N/A

88345045805

N/A QF50X52MM

N/A 52 mm

N/A 50

N/A 16x4.3

N/A 2.16 in54.9 mm

N/A

88345031044

N/A QF50X55MM

N/A 55 mm

N/A 50

N/A 16x4.3

N/A 2.16 in54.9 mm

N/A

88345043726

N/A QF50X55MMU

N/A 55 mm

N/A 50

N/A 16x4.3

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

88345046040

N/A QF5S303X10MM

N/A 10 mm

N/A 5

N/A 3x1.4

N/A 1.08 in27.4 mm

N/A

88345032894

N/A QF5S303X11MM

N/A 11 mm

N/A 5

N/A 4x1.8

N/A 1.08 in27.4 mm

N/A

88345032895

N/A QF5S303X12MM

N/A 12 mm

N/A 5

N/A 4x1.8

N/A 1.08 in27.4 mm

N/A

88345032896

N/A QF5S303X14MM

N/A 14 mm

N/A 5

N/A 5x2.3

N/A 1.08 in27.4 mm

N/A

88345032897

N/A QF5S303X15MM

N/A 15 mm

N/A 5

N/A 5x2.3

N/A 1.08 in27.4 mm

N/A

88345032898

N/A QF5S303X16MM

N/A 16 mm

N/A 5

N/A 5x2.3

N/A 1.08 in27.4 mm

N/A

88345046346

N/A QF5S303X17MM

N/A 17 mm

N/A 5

N/A 5x2.3

N/A 1.08 in27.4 mm

N/A

88345046177

N/A QF5S303X17MMU

N/A 17 mm

N/A 5

N/A 5x2.3

N/A 1.08 in27.4 mm

N/A

88345032899

N/A QF5S303X18MM

N/A 18 mm

N/A 5

N/A 6x2.8

N/A 1.08 in27.4 mm

N/A

88345046178

N/A QF5S303X18MMU

N/A 18 mm

N/A 5

N/A 6x2.8

N/A 1.08 in27.4 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