16751 Hilltop Park Place
Chagrin Falls, Ohio 44023
Phone: (440) 543-7962
Fax: (440) 543-7963
Supplier of Industrial Brake Parts Since 1985
Why Renold Ajax?
Full-Flex Metal Seal Couplings
Flex-Rigid Metal Seal Couplings
Mill Motor Metal Seal Couplings
Flange and Bore Specifications for Metal
and O-Ring Seal Couplings
Typical Custom Designed Couplings
Full-Flex O-Ring Seal Couplings
Flex-Rigid O-Ring Seal Couplings
Mill Motor O-Ring Seal Couplings
Heavy Duty Couplings
Full-Flex Heavy Duty O-Ring Seal Couplings
Flex-Rigid Heavy Duty O-Ring Seal Couplings
Standard Extended Shaft Gaps
Installation Information Standard and Heavy Duty Sizes
Installation, Maintenance, Lubrication
D Series Couplings High Misalignment, Full-Flex
D Series Couplings High Misalignment, Flex-Rigid
DS Series Spindle Couplings
D Series and DS Gear Tooth Design Ratings and
Engineering Layout Details
Ajax Pin and Bush Couplings
Cast Iron Couplings Forged Steel Couplings
Service Parts for Ajax Pin and Bush Couplings
Special Pin and Bush Couplings
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|Special Pin and Bush Couplings|
|Mill Motor||Brake Drum||Shear Pin|
Basic design is established from Type S couplings. Halves are interchangeable
so that spare motors with half coupling mounted can be quickly installed.
Usually one half (long hub flange) is taperbored and counterbored to fit
tapered shafts having shaft end nut.
For use on hoists, winches cranes, elevators and other applications requiring
a brake. Since lubrication is not required, there is no danger of lubricant
contaminating brake surfaces.
Positive overload protection for all direct connected industrial equipment.
Hard steel shear bushings cleanly cuts pin at predetermined overload point.
Such Ajax couplings are commonly used on pulverizes, mixers and conveyors.
How to Select the Proper Pin and Brush Coupling
Horsepower and Torque Ratings:
Ratings for various sizes of Ajax couplings are shown in horsepower at 100 RPM, and lb-in, of torque as well.
Catalog load ratings of Ajax couplings represent the maximum even torques which can be transmitted continuously under ordinary operating conditions. Excessive misalignment, pulsating load, shock, vibration and other factors may, and often do, dictate the size coupling required for any specific application, regardless of theoretical torque load to be transmitted.
Reasonable care should always be used in installing equipment and in securing good initial alignment of shafts.
63025 x Horsepower Torque Lbs/Inches = ------------------------ Revolutions per Minute 100 x Horsepower H.P. @ 100 RPM = ------------------------ Revolutions per MinuteService Factors:
Load ratings of various makes of couplings, as listed by manufacturers, are of little value on a comparative basis. Service or load factors, as recommended by one manufacturer, may be misleading if applied to couplings of different designs.
The service factor to be used in any given instance is based on experience rather than theory. Specific conditions, as well as general classification of the drive, should be taken into consideration. A table of service factors setting forth a list of common applications cannot possibly be complete, and therefore would be of doubtful value.
However, there are a few general applications where our experience has dictated the use of the following service factor.
A service factor of 3 should be applied for those applications for compressors,
internal combustion engines, dredge pumps, pulverizes (non-reversing loads) and
other driving mechanisms subject to pulsating loads or heavy vibrations.
Occasionally on some diesel engine drives there is a reverse torque, in such cases a service factor of 5 is not too much.
On most applications, the engineer will find that when he has selected an Ajax coupling of sufficient shaft capacity, torque capacity will be ample.
How to Select the Correct Size:
The above applies to the standard type of coupling. When ordering shear pin, mill motor, bolt-on, brake drum and other types involving individual specifications, complete information should be furnished in accordance with the requirements of the installation.
Full cooperation of the Ajax Engineering Department and Sales Representatives is available to aid you in the most economical selection.