A complete line of Dalton Shear Pin (torque limiter) Roller Chain Couplings was developed for applications where horsepower and torque or high or extreme accuracy is desired for torque settings.

The coupling halves are hobbed with a special tooth form and hardened 45 to 50 Rockwell "C". Roller chain couplings, when used correctly, are unsurpassed by any other more expensive coupling. Standard sprockets should not be used for coupling applications.

The Dalton Roller Chain Shear Coupling (RCSPC) has an accurate torque release obtained by precision machining of the shear pin neck diameter and material used. The maximum capacity in inch pounds is up to five times greater than the rated capacity of friction type torque limiters. When loads occur beyond the rated capacity, the pin shears at the neck. A new pin when installed allows operation of the equipment with no damage to any part, mechanical or other wise. The pin must be replaced with a Dalton Shear Pin or equivalent. Maximum capacities range from 738 inch pounds to 66.504 inch pounds. Gear Shear Pin Couplings (GSPC) are available to order. Our engineering department is available for more information or when stock sizes do not suit your needs.

Please call for discounts on list prices.
Unit of Measure

Help Desk

N/A For Problems Accessing a CAD Model Please Contact
Telephone: 1-800-451-4231
Email: CustomerService@ThomasNet.com

Stock Bore Shear Pin Coupling Half

N/A 1 Inch

Stock Bores St'd Coupling Half Includes KW & SS

N/A 5/8 Inch

A - Overall Length

N/A 3 5/8 Inch

B - Length

N/A 3/4 Inch

C - Length

N/A 2 7/8 Inch

D - Width

N/A 3/8 Inch

E - Diameter

N/A 3 25/32 Inch

F - Pitch

N/A 1 Inch

G max. - Diameter

N/A 1.25 Inch

H max. - Diameter

N/A 1.625 Inch

I - Diameter

N/A 2 7/8 Inch

J - Diameter

N/A 5/16 Inch

N/A The following table gives the torque carrying capacity of shear pins.
It is based on the following formula:
TT=ARS#N=0.7854D2S#NR when
T= Allowable torque in inch pounds.
R= Radius from center of shaft to center of pin in inches.
A=Area at notch of shear pin in square inches.
D=Diameter at notch of shear pin in inches.
N=Number of pins in shear. The tables are given for 1 pin.
S#=Shearing stress of shear pins in pounds per square inch.

STEEL SHEAR PINS (ULTIMATE SHEAR STRESS 62,000 PSI) ALLOWABLE TORQUE ON ONE PIN IN INCH-POUNDS

 
Coupling SizeNeck Diameter of pin in inch
1/83/161/45/163/87/161/25/8
SP501673816883006     
SP5018923210337695901    
SP6018111425234529710110.249   
SP6020120727394911768411.08715.101  
SP8018149333866039947313.64718.599  
SP802016863814680910.65415.37220.92427.362 
SP10018
 4235758211.82917.08423.26730.396 
SP10020  870613.62119.56126.68634.88754.500
SP12020   16.52823.90032.58642.55666.504