Rate Controls

Enidine Rate Controls are designed to regulate the speed and time required for a mechanism to move from one position to another. Adjustable and non-adjustable models are available to accommodate a wide variety of motion control applications. Both single and double acting hydraulic damper designs allow smooth, controllable machine operation by providing rate control for both linear and rotational (hinged) loads. Each product family offers a variety of stroke lengths from which to choose.

Product Lineup

ADA Series Rate Controls

ITT Enidine ADA Series Rate Controls
Enidine ADA Series Rate Controls are used to regulate the speed or time required for a mechanism to move from one position to another. They use proven technology to enhance performance in a variety of product applications. Rate controls are typically used to control pneumatic cylinders, linear slides, lids, and other moving mechanisms.

The advantages of using ADA Series Rate Controls:

Longer Machine Life – The use of rate controls significantly reduces shock and vibration to machinery caused by uncontrolled machine operation. This further reduces machinery damage, downtime and maintenance costs, while increasing machine life.

Improved Production Quality – Harmful effects of uncontrolled motion, such as noise, vibration and damaging impacts, are moderated or eliminated so that production quality is improved.

Safer Machinery Operation
– Rate controls protect machinery and equipment operators by offering predictable, reliable and controlled machine operation.

Competitive Advantage – Machines and end products become more valuable because of increased productivity, longer life, lower maintenance and safer operation. Enidine offers a wide range of rate controls that provide motion control in tension, compression, or both directions. Adjustable and non-adjustable tamperproof models are available to fit your particular application requirements. The resisting force provided by Enidine rate controls is typically constant over the entire stroke when the piston rod is moved at a constant velocity, since the rate controls are single orifice products.


  • The ADA 500 Series utilize independent adjustment cartridges for motion control in each direction that are conveniently housed in the cylinder end.


  • For Controlled tension and compression capabilities, Enidine’s ADA 700 Series offer this feature located independently at each end of the unit.

DA Series Rate Controls

ITT Enidine DA Series Rate Controls
The DA Series Rate Controls by Enidine are ideally suited for high-energy, heavy load applications requiring rate control in tension, compression or both directions. These non-adjustable, custom-orificed units are designed to specific input conditions, and allow for single and multiple orifice configurations.

Upon compression of the rate control, the compression check ball seats. As the piston head moves, oil is forced through the orifice hole(s) located in the shock tube, producing the required damping force. After the oil has passed through the orifice hole(s), a portion of the oil passes through the extension check valve and fills the rod end of the shock tube. The remainder of the oil volume displaced by the piston rod compresses the foam accumulator.

Upon extension of the rate control, the extension check ball seats. As the piston head moves, oil is forced through the orifice hole(s) located in the shock tube producing the required damping force. The compression check ball is unseated by the flow of oil that fills the blind end of the shock tube.

Enidine’s DA Series models can be custom orificed to provide increasing resisting force over the stroke through the use of multiple orifices in the shock tube. This can be beneficial when controlling the velocity of a lid as it closes, since the torque from the weight of the lid changes as it closes.

Extensive product line offers flexibility in both size and load capacities to fulfill a wide range of application requirements.
ISO quality standards result in reliable, long-life operation.
Custom stroke lengths and damping characteristics can be designed to suit your application requirements.
Incorporating optional fluids can expand the standard operational temperature range from (–10°C to 80°C) to (–30°C to 100°C).
Special materials and finishes available to meet specific customer requirements.
A select variety of surface finishes maintains the original quality appearance and provides the longest corrosion resistance protection.

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