The Dalton OSDC (Overload Safety Device Coupling) provides overload protection through the use of an OSD unit combined with a roller chain coupling half counterbored to fit the OSD flange. Standard double-width roller chain is used to couple the basic OSD unit and the coupling half.
The OSDC can be set with a torque wrench for maximum load desired. The unit functions as a roller chain coupling until an overload occurs, causing the OSDC to disengage. The device is automatically re-engaged when the overload is eliminated.
FORMULA FOR TORQUE-HORSEPOWER (Foot Pounds)
TORQUE (Foot. Pounds) = (HPx5252)/RPM
HORSEPOWER = (Torque x RPM)/525
In furnishing a coupling half to be used in the "OSDC", care must be taken that a standard cut tooth sprocket is not used. The teeth of the "OSDC" coupling half are cut with a special tooth form to compensate for shaft misalignment.
Important Note:
The "OSDC" overload safety device can be made to suit your application. Send us your blueprints or specifications, for recommendations by our engineering department.
The OSDC can be set with a torque wrench for maximum load desired. The unit functions as a roller chain coupling until an overload occurs, causing the OSDC to disengage. The device is automatically re-engaged when the overload is eliminated.
FORMULA FOR TORQUE-HORSEPOWER (Foot Pounds)
TORQUE (Foot. Pounds) = (HPx5252)/RPM
HORSEPOWER = (Torque x RPM)/525
In furnishing a coupling half to be used in the "OSDC", care must be taken that a standard cut tooth sprocket is not used. The teeth of the "OSDC" coupling half are cut with a special tooth form to compensate for shaft misalignment.
Important Note:
The "OSDC" 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
Maximum Torque |
N/A 185 lbs26 mkp |
No. of Springs |
N/A 2 |
OSD Half |
N/A 1/2 Inch12.7 mm |
Coupling Half |
N/A 1 1/8 Inch28 mm |
Coupling Half No. |
N/A 4028A |
OSD Sprocket No. |
N/A 40A28GC |
Coupling Chain No. |
N/A D40 |
For Bore Sizes Not Shown, Add Charge to List Price per Half |
N/A $20.00 |
A - Diameter |
N/A 4.866 Inch124 mm |
B - Length |
N/A 1 1/8 Inch29 mm |
C - Length |
N/A 2 1/8 Inch54 mm |
D - Overall Length |
N/A 3 1/32 Inch77 mm |
E - Diameter |
N/A 4 Inch101.6 mm |
Weight |
N/A 10 lbs3.85 kg |
