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Installation Recommendations and TipsMaking Shock Absorber AdjustmentsEnertrols shock absorbers are to be adjusted at installation start up. Shock absorbers are shipped with adjustment preset at90º, which is midway between "hard" and "soft". A properly adjusted shock absorber should show no noticeable impact at thebeginning of the deceleration stroke and no hard set-down at the end of stroke.1. Starting with a properly sized and installed shock absorber.2. Loosen dial lock screw and set to mid range (number 9 on dial).3. Cycle the machine and observe: Hard bump end of stroke,adjust in gradual increments to a lower number. Hard bump atbeginning of stroke, adjust in gradual increments to a highernumber. Repeat procedure and adjust until no bump is noticedat either end of stroke. In most installations, you will notbe able to see the actual deceleration when properly adjusted.4. Lock the dial set screw after final adjustment.5. If the final adjustment is set less than "2", a larger unit should beconsidered for the application.NOTE: Installations with 2 or more shocks; adjust simultaneously with final setting the same on each.General Installation Tips For All Applications1. Make certain you have properly sized and selected the shock absorber with appropriate mounting options for the application.2. Shock alignment must be set for the moving load to strike the button or rod squarely. The load contact should strike morethan half of the surface of the button or rod. Rotary applications refer to Tip number 15.3. The machine structure must be adequate for the application. Example: With a flange mount shock the attaching structureshould be at least as thick as the shock absorbers flange.4. For models or mounting options that do not include positive stops make certain the shock absorber piston does notbottom out at end of stroke. The shock absorber must be positioned to prevent piston travel 1/32" to 1/16" from bottom.Metric 0.75mm to 1.5mm from bottom stroke.5. Do not short stroke a shock absorber. The result will be excessive energy transmitted to the machine, overheating andpossible permanent damage the shock absorber.6. Mounting Stop Collar installations: make sure the attaching structure is the specified thickness for the shock installation.Failure may result in short stroke or bottoming out of the shock absorber.7. Check clearances of moving parts near the shock absorber to prevent damage.8. Check ambient temperature around shocks Over 125º F. or 52º C. Consult factory.9. Check for any foreign material that will affect the shock, such as chemicals, acids, steam, high degree of weld flash, abrasivedust, etc.10. Do not paint any part of a shock absorber. This may cause the piston rod to stick, oil to leak or overheating. All resulting inloss of functionality. Remove paint only with a material that will not have an effect on nitrite rubber, polyurethane or any sealingsurfaces.11. Never weld any part of a shock absorber.12. Make certain the personnel using the shock understand how the dial adjustment indicator works: LOWER NUMBER-moreresistance; HIGHER NUMBER-less resistance.13. If 2 or more shocks are used for one deceleration direction, the dial setting should be the same. Do not use different strokesor manufacturer brands together.14. Air cylinders with cushions should be set fully open when used with shock absorbers.15. Rotary installations: shocks must be mounted to minimize side loads and located so they are perpendicular to the rotatingload at mid-stroke. Maximum side load for miniature shocks are 3º all others are 5º. Poly pads are not recommended to be usedin rotary applications.2723435 Industrial Park Dr., Farmington Hills, MI 48335 • p: 734-595-4500f: 734-595-6410 • customerservice@enertrols.com • www.enertrols.com