550 Virginia Drive - Fort Washington - PA 19034 - Phone: 800-523-2576 - Fax: 800-635-6273
local #
Phone: 215-542-9000 Fax: 215-542-1428
spur gears
helical gears
worm gears
bevel gears
miter gears
gear rack
internal gears
request-a-quote & file upload
Replacement Parts
•
Prototypes
•
Production Quantities
•
Reverse Engineering
•
Engineering Calculators
•
About Us
Home
>>
Tech_Tools
>> Horsepower Calculator
Horsepower Calculator
for spur gears and helical gears
click here for worm gears
(Lewis Formula with Barth Revision)
Type of Load
Intermittent or
3 hrs per
day
8-10 hours
per day
Continuous
24 hrs per
day
Uniform
Light Shock
Medium Shock
Heavy Shock
Information on this page is to be used as a guide. Consult an Engineer for more info.
# of Teeth
Face Width
(in)
(mm)
RPM
Helix Angle
Material
1141
1141 HARD TEETH
4140 PRE-HT
8620
8620 CASE HARDENED
660 BRONZE
DELRIN
1045
6061 ALUMINUM
303 STAINLESS
304 STAINLESS
316 STAINLESS
17-4 PH STAINLESS
PHENOLIC
CAST IRON
other
Safe Stress
««You can type your own here.
(The safe stress can be taken as 1/3 of the ultimate strength.)
See
Matweb's site for ultimate strength values.
Gear Type
Spur
Helical
Pitch Type
Normal Pitch (for helicals & spurs)
Transverse Pitch (for helicals only)
Pressure Angle
14.5°
20°
Pitch Designation
DP
Mod
CP
Load in lbs @ pitch line
Safe static stress per sq. inch
of material (lbs/sq. inch)
*Velocity (feet per minute)
Horsepower
Torque (inch lbs)
Gear OD
Gear PD
Service Factor
*Special Considerations need to be taken if the Pitch Line VELOCITY exceeds:
1200
FPM for Metallic Spur Gears Or
2400
FPM for Helical Gears or Nonmetallic Spur gears
Search Results
[close]
This page requires javascript. You are seeing this message because you have javascript turned off or your browser does not support it.
Please turn it on and refresh this page or
download a newer browser.