Zero-Max SD040R ServoClass single-flex servo coupling, size 40, with stainless steel flex elements. Designed for precision motion control in servo drive systems, this coupling accommodates parallel and angular misalignment while maintaining torsional stiffness. The stainless steel flex elements provide corrosion resistance and durability in demanding applications.

Angular misalignment

1

Axial misalignment

0.012 inches, 0.30 mm

Axial stiffness

457 lbs/inch, 80 N/mm

Clamp Screw Size (M)

M4, M4

Clamp Screw to Bore (A1, Reduced Hub)

0.433 in, 11 mm

Clamp Screw to Bore (A2)

0.669 Inches, 17 mm

Clamp Screw to End of Hub (C)

0.177 Inches, 4.5 mm

Distance Between Shaft Ends (DBSE)

0.118 in, 3 mm

Hub Length (LB)

0.610 Inches, 15.5 mm

Inertia

See Catalog, See Catalog

Inside Diameter of Flex Disc (K)

0.768 Inches, 19.5 mm

Max Speed

10, 000 RPM

Maximum Bore

0.9375 inches, 24 mm

Minimum Bore

0.3125 inches, 8 mm

Operating Torque

89 in-lbs, 10 Nm

Outside diameter

1.732 Inches, 44 mm

Overall Length

1.339 inches, 34 mm

Parallel misalignment

0.001 inches, 0.02 mm

Reduced Hub Diameter (N)

1.165 Inches, 29.6 mm

Tightening torque

30 in-lbs, 3.4 Nm

Torsional stiffness

20, 000 Nm/rad