CM Series

Product catalog summary

Product Overview

This document details the specifications for Smalley's CM/CMS Series Metric Crest-To-Crest® Springs, available in carbon steel and 17-7 PH stainless steel. All dimensions are provided in millimeters.

1. Product Identification and Ordering Options

End Types: "CM" prefix indicates plain ends; "CMS" prefix indicates squared-shim ends (some sizes unavailable with shim ends).
Material Options: Carbon Steel (default) or Stainless Steel (suffix "-S17").
Ordering Format: Example - CM 030-L1, where "030" is bore diameter and "L1" indicates load/work category.

2. Key Specifications and Parameters

Springs are categorized by multiple parameters, all in millimeters unless noted:

Parameter	Description
Bore Diameter	Inner diameter of the spring bore
Shaft Diameter	Diameter of the shaft the spring fits on
Load (N)	Force the spring can withstand (Newtons)
Work Height	Height of the spring under load
Free Height	Height of the spring when unloaded
Number of Waves	Number of wave crests in the spring
Turns	Number of turns in the spring coil
Thickness	Thickness of the spring material
Wall Thickness	Wall thickness of the spring
Spring Rate (N/mm)	Theoretical stiffness of the spring

3. Product Range and Dimensions

The springs cover bore diameters from 30 mm to 60 mm with corresponding shaft diameters, load capacities ranging approximately from 50 N to 450 N, and varying spring rates. Larger springs have more waves and turns to accommodate higher loads. Each model is identified by a unique Smalley part number (e.g., CM30-L6, CM40-H1, CM55-M3).

4. Material and Manufacturing Notes

Stock springs are available in carbon steel and 17-7 PH stainless steel.
Dimensions are reference values; spring rates are theoretical and measured in N/mm.
Manufactured in the USA by Smalley (contact: 847.719.5900).

5. Ordering and Additional Information

Ordering instructions and further details are referenced on pages 134-135 (not included).
No tooling charges apply for special orders.

Critical Information Summary

Use "CM" prefix for plain ends and "CMS" for squared-shim ends.
Add suffix "-S17" to specify stainless steel material.
Verify bore and shaft diameters to ensure proper fit.
Consider load capacity and spring rate to match application needs.
Dimensions and spring rates are theoretical; actual performance may vary slightly.

This document serves as a comprehensive technical reference to select and order CM/CMS Series springs, ensuring correct sizing, material choice, and performance characteristics for mechanical applications.

Catalog excerpts

CM/CMS Series Stock Items in carbon steel and 17-7 PH stainless steel. Smalley Part Number 1, 2, 5 Operates in Bore Diameter Clears Shaft Diameter Work Height Radial Wall Use “CM” prefix for plain ends. Use “CMS” prefix for squared-shim ends. Add sux “-S17” for 17-7 stainless steel. 3 Reference dimension. 4 Theoretical dimension; measured in N/mm. 5 See pages 134-135 for How to Order. 2 * Not available with shim ends Product Dimensions All dimensions in millimeters unless otherwise specified. Plain Ends Shim Ends Order Options CM 030-L1 End options: Plain ends . . . . . . . . . . . CM Squared-shim ends . . . . . CMS Material option: Carbon Steel . . . . . . . . (blank) Stainless Steel . . . . . . . . -S17

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CM/CMS Series Metric Crest-To-Crest® Springs Stock Items in carbon steel and 17-7 PH stainless steel. Smalley Part Number 1, 2, 5 Product Dimensions All dimensions in millimeters unless otherwise specified. Plain Ends Shim Ends Order Options CM 030-L1 End options: Plain ends . . . . . . . . . . . CM Squared-shim ends . . . . . CMS Material option: Carbon Steel . . . . . . . . (blank) Stainless Steel . . . . . . . . -S17 Operates in Bore Diameter Clears Shaft Diameter Work Height Radial Wall Use “CM” prefix for plain ends. Use “CMS” prefix for squared-shim ends. Add sux “-S17” for 17-7 stainless...

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Operates in Bore Diameter Clears Shaft Diameter Work Height Radial Wall Use “CM” prefix for plain ends. Use “CMS” prefix for squared-shim ends. 2 Add sux “-S17” for 17-7 stainless steel. 3 Reference dimension. 4 Theoretical dimension; measured in N/mm. 5 See pages 134-135 for How to Order. Product Dimensions All dimensions in millimeters unless otherwise specified. Plain Ends Shim Ends Order Options CM 030-L1 End options: Plain ends . . . . . . . . . . . CM Squared-shim ends . . . . . CMS Material option: Carbon Steel . . . . . . . . (blank) Stainless Steel . . . . . . . . -S17

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CM/CMS Series Stock Items in carbon steel and 17-7 PH stainless steel. Smalley Part Number 1, 2, 5 Operates in Bore Diameter Clears Shaft Diameter Work Height Radial Wall Use “CM” prefix for plain ends. Use “CMS” prefix for squared-shim ends. 2 Add sux “-S17” for 17-7 stainless steel. Reference dimension. 4 Theoretical dimension; measured in N/mm. 5 See pages 134-135 for How to Order. Product Dimensions All dimensions in millimeters unless otherwise specified. Plain Ends Shim Ends Order Options CM 030-L1 End options: Plain ends . . . . . . . . . . . CM Squared-shim ends . . . . . CMS Material...

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