The Dalton ROSDC (Rigid Overload Safety Device Coupling) provides overload protection through the use of an OSD unit combined with a rigid coupling half counterbored to fit the OSD flange. All steel rigid coupling half is bolted to a basic OSD unit to form a rigid coupling with the overload feature.

The ROSDC can be set with a torque wrench for maximum load desired. The unit funcitons as a rigid coupling until an overload occurs, causing the ROSDC to disengage. The device is automatically reengaged when the overload is eliminated.


TORQUE (Foot. Pounds) = (HPx5252)/RPM
HORSEPOWER = (Torque x RPM)/5252

Important Note:
The "ROSDC" overload safety device can be made to suit your application. Send us your blueprints or specifications, for recommendations by our engineering department.
Unit of Measure

Help Desk

N/A For Problems Accessing a CAD Model Please Contact
Telephone: 1-800-451-4231

Maximum Torque

N/A 6 lbs1 mkp

No. of Springs

N/A 1

B - OSD Half

N/A 5/16 Inch8 mm

C - Coupling Half

N/A 5/16 Inch8 mm

A - Outside Diameter

N/A 2 Inch51 mm

B - Minimum Bore (OSD Half)

N/A 1/4 Inch6.4 mm

C - Minimum Bore (Rigid Coupling Half)

N/A 1/4 Inch6.4 mm

B - Maximum Bore (OSD Half)

N/A 3/8 Inch10 mm

C - Maximum Bore (Rigid Coupling Half)

N/A 3/4 Inch20 mm

D - Overall Length Thru Bore

N/A 2 7/16 Inch62 mm

E - Length Thru Coupling

N/A 1 3/8 Inch35 mm

F - Length Thru OSD

N/A 1 3/8 Inch35 mm

For Bore Sizes Not Shown, Add Charge to List Price per Half

N/A $16.00


N/A 2.0 lbs.90 kg