High Pressure Compression Series

Transcription

1 : HIGH PRESSURE SERIES High Pressure Compression Series High Spring Rates in a Narrow Profile High Pressure Compression Springs are a series of slender low index compression springs with relatively high pressure ratings compared to standard compression springs. Designed to fit in small holes from 1/8 to 1 and preset to solid height. The High Pressure Series is made of 17-7 Stainless Steel with precipitation hardening heat treatment, shot peened and passivated. Same Pressure in a Narrow Profile Conventional Spring with Similar Pressure High Pressure Narrow Profile High Load Capacities and Rated to Three Pressures 300 PSI Spring 400 PSI Spring 500 PSI Spring How Pressure Rating For LHP Series Would Be Used The pressure rating assigned to each item of the High Pressure Series is a selection parameter to assist in meeting qualitative requirements or quantitative requirements. Applications LHP series springs are ideal for high working loads in short deflections, for example safety relief valves and check valves in fluid power applications, ball plungers, electrical contacts, switches, vise clamps, quick change tools, toys, and production line fittings or accessories. Lee Spring can manufacture custom high pressure compression springs to your specifications. Contact us today! 159

2 : HIGH PRESSURE SERIES High Pressure Compression Series Guide to using tables Lee Stock Number: Lee Spring Part Number. To Work in Hole Diameter: Suggested minimum hole size if needed for spring containment. Wire Diameter: In ascending order of size, within each group of outside diameters. Approx. Load at Solid Height: The load or force required to bring all coils into contact. Spring Rate: Change in load or force per unit of deflection. Price Group: Reference for price list. See fold-out section at rear of book. LEE OUTSIDE TO WORK TO WORK WIRE PRESSURE APPROX. FREE SPRING SOLID PRICE STOCK DIAMETER IN HOLE OVER ROD 80% LOAD AT LENGTH RATE HEIGHT GROUP NUMBER DIAMETER DIAMETER DEFLECTION SOLID HGT. LHP 020A 01S T LHP 020A 02S T LHP 020A 03S T LHP 020A 04S T LHP 020A 05S T LHP 020A 06S U LHP 022A 01S T L Outside Diameter: Spring outer diameter, parts listed in ascending order. To Work Over Rod Diameter: Suggested maximum rod size if needed to guide the inside of the spring. 80% Deflection: The nominal pressure occurring at 80% of total available deflection. Free Length: The overall height of a spring in the unloaded position. Solid Height: Length when fully compressed. RELATIONSHIP TO FLUID PRESSURE The pressure ratings used for High Pressure Series springs have no direct relationship with pressure as traditionally used in the fluid power industry, although indirectly the pressure ratings are conceptually equivalent. Fluid pressure would be the result of a spring force acting over the specific area exposed to the fluid and would depend on other application components such as the valve face or the piston head. PRESSURE CALCULATION EXAMPLE Catalog spring LHP 072E 04S has the following characteristics: Nominal Hole: inch Free Length: inch Solid Height: inch Spring Rate: lbs/inch The maximum recommended pressure for this spring will occur when the spring is at 80% of maximum available deflection (it is not generally recommended to use a compression spring all the way down to solid height). The maximum available deflection is the difference between the Free Length (1.000) and the Solid Height (0.673) or = inch. 80% of that would be x 80% = inch. The calculated load at this deflection would be the deflection (0.262) times the Spring Rate (210.75) or inch x lbs/inch = lbs. The surface area over the Nominal Hole diameter (0.375) would be pi (π) times the diameter squared divided by four or pi (π) x (0.375) 2 / 4 = in 2. The resultant pressure would then be determined by dividing the calculated load by the surface area or lbs / in 2 = 500 lb/in 2 (psi). MATERIAL 17-7 PH Stainless Steel FINISH Passivated per ASTM A967 Tolerances on Spring Rate: ± 10% Tolerances on Outside Diameter: See Compression Diameters Table on page 5. How to Determine Price 1. Select the spring you want by LEE STOCK NUMBER. 2. Read across to the last column PRICE GROUP to obtain the price code: when applicable, select the price code that corresponds to the material type required. 3. Refer to the PRICE GROUP in the appropriate pricing chart by spring type located in the back of this catalog for pricing up to 199 pieces of an item. 4. Prices subject to change without notice. FREE SHIPPING AVAILABLE See Price List in back of catalog for details. 160

3 : HIGH PRESSURE SERIES (INCH) LHP 020A 01S T LHP 020A 02S T LHP 020A 03S T LHP 020A 04S T LHP 020A 05S T LHP 020A 06S U LHP 022A 01S T LHP 022A 02S T LHP 022A 03S T LHP 022A 04S U LHP 022A 05S U LHP 022A 06S W LHP 023A 01S T LHP 023A 02S T LHP 023A 03S T LHP 023A 04S U LHP 023A 05S U LHP 023A 06S W LHP 041C 01S U LHP 041C 02S U LHP 041C 03S W LHP 041C 04S W LHP 041C 05S W LHP 041C 06S W LHP 045C 01S U LHP 045C 02S U LHP 045C 03S W LHP 045C 04S W LHP 045C 05S W LHP 045C 06S X LHP 049C 01S Y LHP 049C 02S Y LHP 049C 03S Y LHP 049C 04S Z LHP 049C 05S Z LHP 049C 06S AA LHP 063E 01S W LHP 063E 02S X LHP 063E 03S Y LHP 063E 04S Y LHP 063E 05S Z LHP 063E 06S Z FREE LENGTH O.D. 161

4 : HIGH PRESSURE SERIES (INCH) LHP 068E 01S X LHP 068E 02S X LHP 068E 03S Y LHP 068E 04S Z LHP 068E 05S Z LHP 068E 06S AA LHP 072E 01S Z LHP 072E 02S Z LHP 072E 03S AA LHP 072E 04S AB LHP 072E 05S AB LHP 072E 06S AC LHP 085G 01S AD LHP 085G 02S AD LHP 085G 03S AE LHP 085G 04S AG LHP 085G 05S AG LHP 085G 06S AJ LHP 091G 01S AD LHP 091G 02S AD LHP 091G 03S AE LHP 091G 04S AG LHP 091G 05S AG LHP 091G 06S AJ LHP 098G 01S AG LHP 098G 02S AG LHP 098G 03S AG LHP 098G 04S AJ LHP 098G 05S AK LHP 098G 06S AL LHP 105H 01S AJ LHP 105H 02S AL LHP 105H 03S AL LHP 105H 04S AM LHP 105H 05S AN LHP 105H 06S AO LHP 115H 01S AM LHP 115H 02S AN LHP 115H 03S AO LHP 115H 04S AP LHP 115H 05S AR LHP 115H 06S AS 162

5 : HIGH PRESSURE SERIES (INCH) LHP 125H 01S AO LHP 125H 02S AP LHP 125H 03S AR LHP 125H 04S AS LHP 125H 05S AT LHP 125H 06S AU LHP 130J 01S AO LHP 130J 02S AS LHP 130J 03S AS LHP 130J 04S AS LHP 130J 05S AT LHP 130J 06S AU LHP 142J 01S AP LHP 142J 02S AS LHP 142J 03S AS LHP 142J 04S AT LHP 142J 05S AU LHP 142J 06S AW LHP 156J 01S AW LHP 156J 02S AX LHP 156J 03S AY LHP 156J 04S AY LHP 156J 05S AZ LHP 156J 06S AZA LHP 156K 01S AW LHP 156K 02S AX LHP 156K 03S AY LHP 156K 04S AZ LHP 156K 05S AZA LHP 156K 06S AZA LHP 170K 01S AW LHP 170K 02S AX LHP 170K 03S AY LHP 170K 04S AZA LHP 170K 05S AZB LHP 170K 06S AZB LHP 177K 01S AY LHP 177K 02S AZ LHP 177K 03S AZA LHP 177K 04S AZB LHP 177K 05S AZC LHP 177K 06S AZD FREE LENGTH O.D. 163

6 : HIGH PRESSURE SERIES (INCH) LHP 177L 01S AZ LHP 177L 02S AZA LHP 177L 03S AZB LHP 177L 04S AZC LHP 177L 05S AZD LHP 177L 06S AZE LHP 192L 01S AZD LHP 192L 02S AZE LHP 192L 03S AZF LHP 192L 04S AZG LHP 192L 05S AZH LHP 192L 06S AZH LHP 207L 01S AZE LHP 207L 02S AZF LHP 207L 03S AZG LHP 207L 04S AZH LHP 207L 05S AZJ LHP 207L 06S AZK 164