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

88345044433 N/A QF50X1-11/16 N/A 1-11/16 in N/A 50 N/A 3/8x3/16 in N/A 2.16 in54.9 mm N/A
88345044419 N/A QF50S303X1-15/16 N/A 1-15/16 in N/A 50 N/A 1/2X1/4 in N/A 2.16 in54.9 mm N/A
88345005384 N/A QF50X1-15/16 N/A 1-15/16 in N/A 50 N/A 1/2X1/4 in N/A 2.16 in54.9 mm N/A
88345043179 N/A QF50X1-15/16U N/A 1-15/16 in N/A 50 N/A 1/2X1/4 in N/A 2.16 in54.9 mm N/A
88345043184 N/A QF50X2-1/16 N/A 2-1/16 in N/A 50 N/A 1/2X1/4 in N/A 2.16 in54.9 mm N/A
88345044440 N/A QF50X2-1/16SH N/A 2-1/16 in N/A 50 N/A 1/2X1/4 in N/A 2.16 in54.9 mm N/A
88345095897 N/A QF50S303X2-3/16 N/A 2-3/16 in N/A 50 N/A 1/2X1/4 in N/A 2.16 in54.9 mm N/A
88345005393 N/A QF50X2-3/16 N/A 2-3/16 in N/A 50 N/A 1/2X1/4 in N/A 2.16 in54.9 mm N/A
88345043188 N/A QF50X2-3/16E N/A 2-3/16 in N/A 50 N/A 5/8X5/16 in N/A 2.16 in54.9 mm N/A
88345044446 N/A QF50X2-3/16SH N/A 2-3/16 in N/A 50 N/A 1/2X1/4 in N/A 2.16 in54.9 mm N/A
88345043715 N/A QF50X2-3/16U N/A 2-3/16 in N/A 50 N/A 1/2X1/4 in N/A 2.16 in54.9 mm N/A
88345044449 N/A QF50X2-5/16 N/A 2-5/16 in N/A 50 N/A 5/8X5/16 in N/A 2.16 in54.9 mm N/A
88345044456 N/A QF50X3/4 N/A 3/4 in N/A 50 N/A 3/16X3/32 in N/A 2.16 in54.9 mm N/A
88345005403 N/A QF50X7/8 N/A 7/8 in N/A 50 N/A 3/16X3/32 in N/A 2.16 in54.9 mm N/A
88345044464 N/A QF50X7/8E N/A 7/8 in N/A 50 N/A 1/4x1/8 in N/A 2.16 in54.9 mm N/A
88345043708 N/A QF50X7/8U N/A 7/8 in N/A 50 N/A 3/16X3/32 in N/A 2.16 in54.9 mm N/A
88345044437 N/A QF50X15/16 N/A 15/16 in N/A 50 N/A 1/4x1/8 in N/A 2.16 in54.9 mm N/A
88345032893 N/A QF50S303XPB N/A Pilot 23/32 in N/A 50 N/A No Keyway in N/A 2.16 in54.9 mm N/A
88345005405 N/A QF50XPB N/A Pilot 23/32 in N/A 50 N/A No Keyway in N/A 2.16 in54.9 mm N/A
88345043968 N/A QF100S303X1 N/A 1 in N/A 100 N/A 1/4x1/8 in N/A 2.46 in62.5 mm N/A
88345043987 N/A QF100X1 N/A 1 in N/A 100 N/A 1/4x1/8 in N/A 2.46 in62.5 mm N/A
88345042835 N/A QF100S303X2 N/A 2 in N/A 100 N/A 1/2X1/4 in N/A 2.46 in62.5 mm N/A
88345005160 N/A QF100X2 N/A 2 in N/A 100 N/A 1/2X1/4 in N/A 2.46 in62.5 mm N/A
88345043994 N/A QF100X2E N/A 2 in N/A 100 N/A 5/8X5/16 in N/A 2.46 in62.5 mm N/A
88345043733 N/A QF100X2U N/A 2 in N/A 100 N/A 1/2X1/4 in N/A 2.46 in62.5 mm N/A
Unit of Measure
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