High quality hard chrome plated piston rods are essential not only as gas spring and shock absorber parts, but also as outer and inner rods. Maintaining the accuracy and long life of these components, wear and corrosion are prevented; extremely tight-tolerance dimensions are what these rods provide. High strength chrome plated rods are made from various materials - CK45, ST52, AISI 4140 being the more common examples.

Key Features:

Wear Resistance

• Virtually eliminates seal and rod scoring, minimising the subsequently possible fluid leakage; damping performance remains near constant through thousands of program cycles.

Corrosion Protection

• Maintains both appearance and all round durability in near constant harsh environments, warranty claims are decreased and a positive brand image is kept.

Surface Finish

• Perfect molding seal with an ultra smooth surface removes almost all friction, the 'stick-slip' effect being completely or near completely eliminated. Butter smooth, quiet operation is the end result for the end user.

High Accuracy

• Exact fit and some form of seal with the cylinder is ensured; flat construction and the previously mentioned sealing quality make installation and (re-) removal a simple process.

Manufacturing process:

Cleaning the rod (surface oil and all impurities are removed).

Soaking in an acid bath to remove any remaining pollutants.

Processing the surface to create a specific lubricating structure to aid the adherence of the future chromium covering.

Electrolytic plating - chromic acid is used, the final product being a near perfect hard chrome layer.

Post treatment if required, to enhance the external appearance of the rod.

Our factory implements a high level of quality control throughout the production process; ensuring that our chrome plated piston rods meet all specified customer requirements.

Hengzhixin offers customized services, producing tailor-made gas spring rods and various forms of damper rods based on those same individual requirements.

The hard chrome plated piston rods themselves are recognized for both durability and near complete corrosion resistance. The chrome plating provides a near robust surface - wear resistance being the primary focus, with all round corrosion protection (to at least comparable levels to some stainless steels) being a secondary but important factor. These rods are not limited to gas springs and simple dampers; automobiles, furniture, specific machinery being just a few of the more widespread applications, highlight the true versatility that Hengzhixin can provide.

Types / Companion Applications

This solid piston rod is specifically designed for use in two main types of products:

1. Gas Springs (Gas Struts)

• Function: Gas springs are energy storage devices that use compressed nitrogen gas to provide a controlled force for lifting, lowering, or positioning.

• Role of the Piston Rod: The rod acts as the moving component that extends and retracts. Its smooth chrome surface ensures a perfect seal to contain the high-pressure gas and oil within the cylinder.

• Common Sub-Types:

  • Locking Gas Springs: Can be locked in position at any point along their stroke.

  • Non-Locking Gas Springs: Provide a constant force for lifting or supporting.

2. Dampers (Shock Absorbers)

• Function: Dampers are designed to absorb and dissipate kinetic energy, controlling motion and damping vibrations and shocks.

• Role of the Piston Rod: The rod transmits the external force to the piston and oil inside the damper. Its hardness and surface finish are crucial for the smooth operation of the sealing system, which controls the flow of hydraulic fluid and thus the damping characteristic.

• Common Sub-Types:

  • Linear Dampers: Used for controlling the speed of linear motion (e.g., door dampers).

  • Rotary Dampers: Used for controlling rotational motion (e.g., lid dampers). Note: Rotary dampers may not always use a piston rod in the same way.

Applications / Industries of Use

These components are essential in a vast range of industries and products, including:

• Automotive Industry:

  • Gas Springs: Tailgates, hoods, hatches, trunk lids, passenger vehicle seats.

  • Dampers: Shock absorbers and struts for suspension, glove box lids, cup holders, armrests.

• Furniture and Office Equipment:

  • Gas Springs: Adjustable office chairs, height-adjustable desks, cabinet doors.

  • Dampers: Soft-close mechanisms for drawers and cabinets, monitor arm mechanisms.

• Aerospace and Aviation:

  • Gas Springs & Dampers: Overhead storage bins, aircraft seats, cargo doors, landing gear doors.

• Medical Equipment:

  • Gas Springs: Patient lifting equipment, adjustable hospital beds, surgical light arms, dental chairs.

  • Dampers: Controlling the motion of lids and movable parts on sensitive equipment.

• Industrial Machinery:

  • Gas Springs: Safety guards, machine hatches, counterbalancing mechanisms for heavy lids.

  • Dampers: Machinery hatches, robotic arms, conveyor systems to reduce impact.

• Marine Industry:

  • Gas Springs & Dampers: Hatch lids, engine compartment covers, where high corrosion resistance is critical.

• Consumer Electronics and Appliances:

  • Dampers: Washing machine lids, top-loading dryer doors, slow-close oven doors.

FAQ:

1. OEM

Yes, we can make your brand and design and also packing as per your request

2. LOGO printing

We can pring your logo on the hard chrome plated piston rod.

3. MOQ

15000 pcs/ item.

4. Samples

We can provide hard chrome plated piston rod samples at buyer's cost and send samples with FedEX, DHL and UPS (freight collect)

5. Delivery time

For MOQ, leading time is about 30-40 days after samples confirmed.

6.The service you can get from Hengzhixin

1) Quick responses with full attention within 24 hours.

2) Free hard chrome hydraulic rod samples

3) OEM orders are welcome.

4) Samples and mass production status updated promptly and timely.

5) Best service not only on damper rod order process but also after sales.