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

88345044121 N/A QF175X2-3/8U N/A 2-3/8 in N/A 175 N/A 5/8X5/16 in N/A 2.67 in67.8 mm N/A
88345045763 N/A QF175S303X2-5/8 N/A 2-5/8 in N/A 175 N/A 5/8X5/16 in N/A 2.67 in67.8 mm N/A
88345042980 N/A QF175X2-5/8 N/A 2-5/8 in N/A 175 N/A 5/8X5/16 in N/A 2.67 in67.8 mm N/A
88345042981 N/A QF175X2-5/8U N/A 2-5/8 in N/A 175 N/A 5/8X5/16 in N/A 2.67 in67.8 mm N/A
88345044092 N/A QF175S303X2-7/8 N/A 2-7/8 in N/A 175 N/A 3/4X3/8 in N/A 2.67 in67.8 mm N/A
88345042983 N/A QF175X2-7/8 N/A 2-7/8 in N/A 175 N/A 3/4X3/8 in N/A 2.67 in67.8 mm N/A
88345044124 N/A QF175X2-7/8E N/A 2-7/8 in N/A 175 N/A 7/8X7/16 in N/A 2.67 in67.8 mm N/A
88345042984 N/A QF175X2-7/8U N/A 2-7/8 in N/A 175 N/A 3/4X3/8 in N/A 2.67 in67.8 mm N/A
88345044096 N/A QF175S303X3-1/8 N/A 3-1/8 in N/A 175 N/A 3/4X3/8 in N/A 2.67 in67.8 mm N/A
88345096459 N/A QF175X3-1/8 N/A 3-1/8 in N/A 175 N/A 3/4X3/8 in N/A 2.67 in67.8 mm N/A
88345044099 N/A QF175S303X3-3/8 N/A 3-3/8 in N/A 175 N/A 7/8X7/16 in N/A 2.67 in67.8 mm N/A
88345040988 N/A QF175X3-3/8 N/A 3-3/8 in N/A 175 N/A 7/8X7/16 in N/A 2.67 in67.8 mm N/A
88345096010 N/A QF175X3-3/8U N/A 3-3/8 in N/A 175 N/A 7/8X7/16 in N/A 2.67 in67.8 mm N/A
88345044128 N/A QF175X3-3/8UKW N/A 3-3/8 in N/A 175 N/A 7/8X7/16 in N/A 2.67 in67.8 mm N/A
88345044100 N/A QF175S303X3-5/8 N/A 3-5/8 in N/A 175 N/A 7/8X7/16 in N/A 2.67 in67.8 mm N/A
88345042996 N/A QF175X3-5/8 N/A 3-5/8 in N/A 175 N/A 7/8X7/16 in N/A 2.67 in67.8 mm N/A
88345044130 N/A QF175X3-5/8U N/A 3-5/8 in N/A 175 N/A 7/8X7/16 in N/A 2.67 in67.8 mm N/A
88345044102 N/A QF175S303X3-7/8 N/A 3-7/8 in N/A 175 N/A 1x1/2 in N/A 2.67 in67.8 mm N/A
88345042997 N/A QF175X3-7/8 N/A 3-7/8 in N/A 175 N/A 1x1/2 in N/A 2.67 in67.8 mm N/A
88345042998 N/A QF175X3-7/8U N/A 3-7/8 in N/A 175 N/A 1x1/2 in N/A 2.67 in67.8 mm N/A
88345044132 N/A QF175X3-7/8USH N/A 3-7/8 in N/A 175 N/A 1x1/2 in N/A 2.67 in67.8 mm N/A
88345044113 N/A QF175X1-7/16U N/A 1-7/16 in N/A 175 N/A 3/8x3/16 in N/A 2.67 in67.8 mm N/A
88345044110 N/A QF175X1-11/16 N/A 1-11/16 in N/A 175 N/A 3/8x3/16 in N/A 2.67 in67.8 mm N/A
88345042964 N/A QF175X1-15/16 N/A 1-15/16 in N/A 175 N/A 1/2X1/4 in N/A 2.67 in67.8 mm N/A
88345049684 N/A QF175X2-1/16 N/A 2-1/16 in N/A 175 N/A 1/2X1/4 in N/A 2.67 in67.8 mm N/A
Unit of Measure
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