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Fx: 203-334-7792
Email: ctopar@e-jpc.com
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  • High torsional stiffness
  • Low radial loads
  • Parallel misalignment capability
  • Low inertia
The DS Series was designed for today's high performance motion control systems. This Series incor porates two helical beams in each of two separate HELI-CAL Flexures, combining greater end-to-end rotational accuracy with radial flexi bility in one design. Available only with integral clamp attachments, the DS Series provides the high torsional stiffness and low inertia necessary for positioning devices, servo motors and lead screws.

The DS Series also provides you with substantial .010-inch parallel offset capability, reducing the need for high-precision alignment during assembly operations. It's your ticket to greater system accuracy and reliability. Available only in 7075-T6 aluminum.
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Helical DS Series Aluminum Couplings

Helical DS Series Aluminum Couplings
Helical DS Series Aluminum Couplings

Helical DS Series Aluminum Couplings
Helical DS Series Aluminum Couplings

Helical DS Series Aluminum Couplings
Helical DS Series Aluminum Couplings

Helical DS Series Aluminum Couplings
Helical DS Series Aluminum Couplings

Helical DS Series Aluminum Couplings
Product Type N/A Coupling
Series N/A DSAC
Material N/A 7075-T6 Aluminum Alloy
Finish N/A Clear Anodize
Outside Diameter Designator N/A 075 N/A 075 N/A 075 N/A 100 N/A 100
Outside Diameter (D) N/A 3/4 in N/A 3/4 in N/A 3/4 in N/A 1 in N/A 1 in
Length (L) N/A 1.25 in N/A 1.25 in N/A 1.25 in N/A 1.50 in N/A 1.50 in
Size (+0.002 in/-0.000 in) N/A 0.188 in4.78 mm N/A 0.250 in6.35 mm N/A 0.250 in6.35 mm N/A 0.250 in6.35 mm N/A 0.313 in7.96 mm
Bore Designator N/A 6 N/A 8 N/A 8 N/A 8 N/A 10
Momentary Dynamic Torque N/A 14 lb·in N/A 12 lb·in N/A 12 lb·in N/A 31 lb·in N/A 29 lb·in
Torsional Rate N/A 0.30 N/A 0.40 N/A 0.40 N/A 0.13 N/A 0.16
Inertia1 N/A 0.091 x 10-5 lb.in.sec2 N/A 0.091 x 10-5 lb.in.sec2 N/A 0.091 x 10-5 lb.in.sec2 N/A 0.35 x 10-5 lb.in.sec2 N/A 0.35 x 10-5 lb.in.sec2
Screw Size2 N/A 4 - 40 N/A 4 - 40 N/A 4 - 40 N/A 6 - 32 N/A 6 - 32
Seating Torque N/A 10 lb·in N/A 10 lb·in N/A 10 lb·in N/A 19 lb·in N/A 19 lb·in
Center Line N/A 0.12 in N/A 0.12 in N/A 0.12 in N/A 0.15 in N/A 0.15 in
Min. Size N/A 0.188 in4.78 mm N/A 0.188 in4.78 mm N/A 0.188 in4.78 mm N/A 0.250 in6.35 mm N/A 0.250 in6.35 mm
Max. Size N/A 0.250 in6.35 mm N/A 0.250 in6.35 mm N/A 0.250 in6.35 mm N/A 0.394 in10.00 mm N/A 0.394 in10.00 mm
Max. Bore Diameter N/A 0.390 in9.90 mm N/A 0.390 in9.90 mm N/A 0.390 in9.90 mm N/A 0.563 in14.31 mm N/A 0.563 in14.31 mm
Bore Depth N/A 0.25 in6.35 mm N/A 0.25 in6.35 mm N/A 0.25 in6.35 mm N/A 0.38 in9.65 mm N/A 0.38 in9.65 mm
Additional Information N/A
Attachment Methods

Equal diameter shafts

Internal Configuration

Ordering Information-DS Series

Unequal Diameter Shaft
Customize N/A Custom Designs
  • 1 Inertia is based on smallest standard bore diameter.
  • 2 Metric fasteners available on request.