The Timken Company
The Timken Company
4500 Mt Pleasant St. NW
N. Canton, OH 44720
Phone: (234) 262-3000
E-Mail: CustomerCAD@timken.com • Web site: www.timken.com
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QUICK FLEX couplings consist of two hubs, one insert, and a cover.
QUICK FLEX Coupling Hub Photo
Unit of Measure
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Part Number

Description 

Bore Size 

Coupling Size

Keyway Size (W x D)

Length thru Bore

CAD

88345044435 N/A QF50X1-3/8E N/A 1-3/8 in N/A 50 N/A 3/8x3/16 in N/A 2.16 in54.9 mm N/A
88345044436 N/A QF50X1-3/8EU N/A 1-3/8 in N/A 50 N/A 5/16X5/32 in N/A 2.16 in54.9 mm N/A
88345043181 N/A QF50X1-3/8U N/A 1-3/8 in N/A 50 N/A 5/16X5/32 in N/A 2.16 in54.9 mm N/A
88345043160 N/A QF50S303X1-5/8 N/A 1-5/8 in N/A 50 N/A 3/8x3/16 in N/A 2.16 in54.9 mm N/A
88345005386 N/A QF50X1-5/8 N/A 1-5/8 in N/A 50 N/A 3/8x3/16 in N/A 2.16 in54.9 mm N/A
88345043182 N/A QF50X1-5/8U N/A 1-5/8 in N/A 50 N/A 3/8x3/16 in N/A 2.16 in54.9 mm N/A
88345043162 N/A QF50S303X1-7/8 N/A 1-7/8 in N/A 50 N/A 1/2X1/4 in N/A 2.16 in54.9 mm N/A
88345005388 N/A QF50X1-7/8 N/A 1-7/8 in N/A 50 N/A 1/2X1/4 in N/A 2.16 in54.9 mm N/A
88345043183 N/A QF50X1-7/8U N/A 1-7/8 in N/A 50 N/A 1/2X1/4 in N/A 2.16 in54.9 mm N/A
88345095896 N/A QF50S303X2-1/8 N/A 2-1/8 in N/A 50 N/A 1/2X1/4 in N/A 2.16 in54.9 mm N/A
88345005392 N/A QF50X2-1/8 N/A 2-1/8 in N/A 50 N/A 1/2X1/4 in N/A 2.16 in54.9 mm N/A
88345044444 N/A QF50X2-1/8E N/A 2-1/8 in N/A 50 N/A 5/8X5/16 in N/A 2.16 in54.9 mm N/A
88345043187 N/A QF50X2-1/8U N/A 2-1/8 in N/A 50 N/A 1/2X1/4 in N/A 2.16 in54.9 mm N/A
88345043163 N/A QF50S303X2-3/8 N/A 2-3/8 in N/A 50 N/A 5/8X5/16 in N/A 2.16 in54.9 mm N/A
88345044424 N/A QF50S303X2-3/8E N/A 2-3/8 in N/A 50 N/A 3/4X3/8 in N/A 2.16 in54.9 mm N/A
88345005394 N/A QF50X2-3/8 N/A 2-3/8 in N/A 50 N/A 5/8X5/16 in N/A 2.16 in54.9 mm N/A
88345096094 N/A QF50X2-3/8E N/A 2-3/8 in N/A 50 N/A 3/4X3/8 in N/A 2.16 in54.9 mm N/A
88345043189 N/A QF50X2-3/8U N/A 2-3/8 in N/A 50 N/A 5/8X5/16 in N/A 2.16 in54.9 mm N/A
88345031034 N/A QF50X1-3/16 N/A 1-3/16 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
88345044438 N/A QF50X1-5/16 N/A 1-5/16 in N/A 50 N/A 5/16X5/32 in N/A 2.16 in54.9 mm N/A
88345043161 N/A QF50S303X1-7/16 N/A 1-7/16 in N/A 50 N/A 3/8x3/16 in N/A 2.16 in54.9 mm N/A
88345005387 N/A QF50X1-7/16 N/A 1-7/16 in N/A 50 N/A 3/8x3/16 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
88345044439 N/A QF50X1-9/16 N/A 1-9/16 in N/A 50 N/A 3/8x3/16 in N/A 2.16 in54.9 mm N/A
Unit of Measure
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