Part Number
Diagram		 Nominal Diameter Threads Per Inch Number
of Starts		 Lead Inch Root
Diameter (Minimum)		 Operating
Load (Pounds)		 Static
Load (Pounds)		 Torque to Raise
1 lb
(in-lb)		 Efficiency Forward
Driving		 Screw
Weight
(lbs/ft)		 3D CAD Drawing Catalog Page

Screws are precision rolled from 1018 cold rolled steel (except where noted) to Class 2g available in 12 foot lengths. Stainless steel screws (304 S.S) available in 6ft lengths highlighted. Drive torques are based on a well lubricated bronze nuts. There can be a 15%-20% increase in torque if poorly lubricated.

Static and operating loads are calculated using bronze nuts. Additional ACME sizes and thread configurations (Left Hand, Multiple Start, Stub ACME and different materials) are available, consult factory. Machined ends are available per customer specification or Standard end machining; bearing mounts available for selected sizes, consult factory.
Note: The products shown in this catalog are intended for industrial use only and should not be used to lift, support or otherwise transport people, unless you obtain a written authorization for each individual application from Rockford Ball Screw Co. The specifications and data in this publication are believed to be accurate and reliable. However, it is the responsibility of the product user to determine the suitability of Rockford Ball Screw products for a specific application.
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