Shock Breaker Dimensions

This information is about the Enertrols shock breakers. These do not necessarily match the figures of other companies. Also keep in mind that there are many types of shock breakers and absorbers, each with their own characteristics.

Basic Factors

When figuring out shock breaker sizes, you must assess how much energy is dispersed for each cycle. The second is the amount of energy dispelled in a 60 minute operation. The application’s effective weight must be assessed also.

Kinetic Energy

The formula for determining the kinetic energy for every cycle is KE=½MV2. Remember that a moving object will be composed of inertia or inertia plus a driving force.

Effective Weight

The effective weight is crucial for getting the shock breaker correct. The general rule is this: if the impact velocities are under 1 ft/sec, choose the next highest bore size.

This is also the rule if the propelling / driving force (F x S) is beyond ½ of the E3 value (where E3 is the total energy per cycle). If you’re not sure of the shock breaker size, you must consult the shock breaker / absorber manufacturer for more information.

High and Low Effective Weight

High effective weight produces high set downforce towards the shock breaker stroke. The low effective weights generate the impact forces at the start of the stroke.

Energy Capacity of Full Threaded Body Shock Absorbers

The specs for adjustable full threaded models are the following. For model SA they are: bore: ¼ inches; stroke: ½ inches; max in/lbs cycle: 150; effective weight lbs /min/max: 5-400 lbs / 2.3-182 Kg; max in / lbs / hour 400,000 lbs; max strength: 750 lbs.

The shock breaker size and specs for model SALD are as follows: bore: 3/8 in; stroke: 1 in; maximum inch/lbs/cycle: 600 in.-lbs; effective weight lbs. min/max: 10-1,200 lbs; maximum inch-lbs/hour: 600,000 lbs; mounting strength: 1,500 lbs.

Non Adjustable Full Body Types

For the SNALD UNF Series 25 the stroke is ¼ inches; effective weight lbs: 4-12; the maximum energy capacity is 25 lbs per cycle / 750 lbs per hour. The 75 series specs are: stroke: 3/8 in; effective weight lbs: 2-36; maximum energy capacity: 75 lbs per cycle / 250,000 lbs per hour.

The specifications for the 150 are: stroke: ½ inches; effective weight lbs: 2-22; maximum energy capacity: 150 lbs per cycle / 300,000 lbs per hour.

Other Shock Breaker Sizes and Specifications

For the SNALD UNF Series 225, the stroke is ½ in; effective weight lbs: 5-55; maximum energy capacity: 225 lbs per cycle / 400,000 lbs per hour. For the 450 series, the stroke is 1 inch; effective weight lbs: 5-35; maximum energy capacity: 450 lbs per cycle / 600,000 lbs per hour.

The specs for the 600H2 are the following: stroke: 1 inch; effective weight lbs: 880-5000; maximum energy capacity: 600 lbs per cycle / 600,000 lbs per hour. These are just some of the Enertrol models; there are many more with different specifications.

Shock breaker sizes often require complex calculations to figure the one you need. Choosing the wrong one can lead to greater risks, so consulting a professional may be necessary.

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