Customer Service Hotline: 800.542.6552
FAX: 800.860.5553

 
Technical Information
Technical Information Hotline: 800-352-0418
 

Shaft Collars & Rigid Coupings

 

     

Keyless Locking Assemblies
 

     

SPECIFICATIONS FOR CATALOG-Series
COLLARS AND COUPLINGS
Technical Information Hotline: 800-352-0418
 

Material
Steel High Strength,
Low Carbon Steel
Stainless Steel  Type 303 Austenitic or Type 316 Austenitic
Aluminum Type 6061 – T651 or equivalent
Nylon  Delrin
Screws
Steel, Set  Hex Socket, Cup Point, 3A Thread, ASTM F912
Steel, Cap Hex Socket, 3A Thread, ASTM A574
Stainless Steel, Set Hex Socket, Cup Point, 3A Thread, ASTM F880
Stainless Steel, Cap Hex Socket, 3A Thread, ASTM F837
Finish
Steel Black Oxide, Zinc Plated or Yellow Zinc
Stainless Steel Plain
Aluminum Plain

 

Tolerances
Bore Diameter As specified on individual catalog pages
Width, Collars + 0.005 inch
Length, Couplings  + 0.015 inch
Steel screws are supplied with steel and aluminum collars and couplings.

Stainless steel screws are supplied with stainless steel collars and couplings and all nylon collars.

AXIAL LOAD CAPACITY FOR CATALOG-Series
COLLARS AND COUPLINGS

Collar resistance to axial motion on the shaft is primarily a function of screw size. The tables indicate maximum static load that a collar will support without slippage. It is based on screws at full recommended seating torque and, for set screw collars, shaft hardness not exceeding Rockwell C35.

Load capability is reduced with stainless steel screws because of lower seating torque. Load capability may be nearly doubled with set screw collars by adding a second set screw. Threaded collars and shafts have much greater axial load capability.

The tables also indicate “typical” maximum values and are not a guarantee under all conditions. Values are only a guide and must be evaluated by customers based on individual application. Climax Metal Products Company does not intend these values to serve as a warranty.

Note: The Axial Load data presented is based on the median bore size for a particular screw size.
 
Set Screw Collars
    Maximum  
Socket Seating Maximum Seating Stainless
Set Torque Alloy Torque Axial
Screw Alloy Axial Load Stainless Load 
Size (in-lb) (lb) (in-lb) (lb)
10-32 10 250 7 135
8-32 20 375 15 200
10-32 35 550 25 300
1/4 - 20 90 950 70 550
5/16 - 18 170 1500 135 900
5/16 - 24 170 1500 135 1000
3/8 - 16 300 2200 235 1200
1/2 - 13 625 3000 500 1200
Clamping Collars
Socket       Maximum
Head Seating Maximum Seating Stainless
Cap Torque Alloy Torque Axial
Screw Alloy Axial Load Stainless Load 
Size (in-lb) (lb) (in-lb) (lb)
4-40 15  200 8 150
6-32 25 500 15 200
8-32 50 950 30 600
10-32 75 1750 45 800
1/4-28 175 2600 115 1400
5/16-24 340 6200 200 2800
3/8-24 600 7200 350 3800

T = Torque required to rotate shaft in coupling (in-lb)
F = Axial load based on a given screw size (lb)
R = Bore radius (inch) T = (F x 2) x R

Disclaimer: The Axial Load and Torque data presented are based on limited test results and are not a guarantee of minimum or maximum values under all conditions

SEATING TORQUE FOR CATALOG-Series
COLLARS AND COUPLINGS

Socket Head Cap Screws
Screw Size Seating Torque Seating Torque 
(Inch) Alloy (in-lb)  Stainless (in-lb) 
4-40 15 8
6-32 25 15
8-32 50 30
10-32 75 45
1/4-28 175 115
5/16-24 340 200
3/8-24 600 350
Screw Size Seating Torque Seating Torque 
(Metric) Alloy (in-lb) Stainless (in-lb)
M 3  18 9
M 4 41 22
M 5 85 45
M 6 145 76
M 8 345 183
M 10 690 366
Socket Set Screws
Screw Size Seating Torque Seating Torque 
(Inch) Alloy (in-lb) Stainless (in-lb)
6-32 10 7
8-32 20 15
10-32 35 25
1/4-20 90 70
5/16-18 170 135
5/16-24 170 135
3/8-16 300 235
1/2-13 625 500
Screw Size Seating Torque