Flexible Gear Rack and Pinion High Precision Polyamide Nylon PA66 Plastic Gear Rack

A flexible gear rack is a type of gear rack that is designed to have flexibility and bending capability along its length. It consists of a strip or belt with teeth cut into it, similar to a traditional gear rack. However, the key difference is that the flexible gear rack can bend and conform to curved or non-linear paths.

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A flexible gear rack is a type of gear rack that is designed to have flexibility and bending capability along its length. It consists of a strip or belt with teeth cut into it, similar to a traditional gear rack. However, the key difference is that the flexible gear rack can bend and conform to curved or non-linear paths.

The teeth on the flexible gear rack are typically made of a durable material, such as reinforced polymer or steel, to ensure proper engagement and transmission of motion. The rack is designed to mesh with a pinion gear, which is a small gear that provides rotational motion.

flexible gear rack

The Characteristics of a flexible gear rack

Flexible Gear Rack

  • Good Tensile strength.
  • High impact.
  • High heat-resistance.
  • High strength.
  • Good self-lubrication.
  • Good chemical stability.
  • Low water absorption.



Industry FocusAppliance/ Automotive/ Agricultural
Electronics/ Industrial/ Marine
Mining/ Hydraulics/ Valves
Oil and Gas/ Electrical/ Construction
Intended ApplicationShafts
Valve Components
Automatic Door Components
Cable/ Electronic Connector
Fire Suppression System Components

Fittings/ Fasteners

Gears/ Hardware
Roller Bearings

Lead Times AvailableMax: 2 Weeks (On Initial Order)

Rush Services Available

Industry StandardsISO 9001:2008
RoHS Compliant
Additional CapabilitiesCAD Design Services
CAM Programming Services
Coordinate Measuring Machines (CMM)
Reverse Engineering
Equipment ListFrom simple 2-axis turning to 7-axis, turn-mill-drill CNC Swiss-type machines, we are equipped with a full line of CNC equipment from the following manufacturers:
molding machines/ stamping machines
automatic lathe machines/ spring machines.
Automation CapabilitiesContinuous Machining
Material (Metals)Alloy Steels/ Aluminum/ Brass/ Bronze Alloys
Carbon Steel/ Copper/ Stainless Steel/ Tool Steel
Cold Rolled Steel/ Bearing Steel
(Plastic Polymers)
ABS/ Delrin/ Nylon/ PVC
(Special Capabilities)
Broaching/ Hobbing/ Slotting
Tolerance±0.0002 in
±0.0051 mm

Working principle of flexible gear rack

When the pinion gear rotates, its teeth engage with the teeth of the flexible gear rack. The meshing action between the pinion gear and the flexible rack causes the rack to bend and follow the contour of the pinion gear's teeth. This bending action converts the rotational motion of the pinion gear into linear motion along the length of the flexible gear rack.

The flexibility of the gear rack allows it to adapt to various motion paths and navigate curved or non-linear trajectories. This makes it suitable for applications where rigid gear racks cannot achieve the desired motion requirements. The flexibility of the rack also helps compensate for any misalignment or slight variations in the gear system.

Material of flexible gear rack

Plastic racks can be made from a variety of materials. The traditional PR uses MC nylon, while the PRF has end machining to connect multiple racks. The polyacetal-based DRFD and DRFK series have mounting holes. The injection-molded DR series has unique flexibility properties that make it suitable for curved locations. You can also choose between various racks based on size, shape, and material. The material used for the gears will depend on the number of gears and the force required to move them. Considerations may include the application and environment of the gear, including moisture and chemical exposure. Choose a material with good strength and stiffness. Dimensional stability is critical for maintaining gear tooth contact ratio, tooth tip clearance, and overall geometry. Depending on the manufacturing process and moisture content, plastic materials will have different sizes.

As a plastic gear supplier, we always aim to provide the highest quality products and the most comprehensive services and look forward to cooperating with you.

flexible gear rack

How do you select the right flexible gear rack?

When selecting a suitable flexible gear rack, there are several key factors to consider. Here are some guidelines to help you choose the right flexible gear rack for your application:

1. Load Capacity: Determine the maximum load that the flexible gear rack will need to support. Consider both the static load (weight of the objects being moved) and the dynamic load (forces or impacts during operation). Choose a flexible gear rack with a load capacity that exceeds the anticipated loads to ensure reliable and safe operation.

2. Required Linear Travel: Determine the desired linear travel or stroke length that the flexible gear rack needs to achieve. Consider the available space and the specific requirements of your application. Choose a flexible gear rack with an appropriate length that can accommodate the desired linear travel.

3. Flexibility and Bending Radius: Evaluate the flexible gear rack's flexibility and bending capability. Consider the required curvature or non-linear path that the rack needs to follow. Choose a flexible gear rack with a bending radius that matches or exceeds your application's curvature requirements.

4. Tooth Profile and Pitch: Consider the tooth profile and pitch of the flexible gear rack. The tooth profile should be compatible with the mating pinion gear. Choose a tooth profile that ensures proper engagement and smooth operation. The pitch should also match the pitch of the pinion gear for accurate and efficient motion transmission.

5. Material and Durability: Evaluate the material composition of the flexible gear rack. It should be made of a durable and wear-resistant material to withstand the anticipated loads and operating conditions. Consider factors such as temperature, humidity, and exposure to chemicals or contaminants in your application environment.

6. Precision and Backlash: Assess your application's precision requirements. Choose a flexible gear rack that offers the necessary positioning accuracy and minimal backlash. Lower backlash ensures better repeatability and accuracy in linear motion.

7. Manufacturer and Quality: Select a reputable and reliable manufacturer or supplier for the flexible gear rack. Ensure that they have a track record of producing high-quality gear racks. Consider factors such as product warranty, technical support, and the availability of compatible accessories or components.

8. Cost and Budget: Consider the cost of the flexible gear rack and ensure that it fits within your budget. However, prioritize the requirements and performance of the gear rack over cost alone to avoid compromising on quality and suitability for your application.

Flexible Gear Rack Display

Flexible Gear Rack Flexible Gear Rack Flexible Gear Rack Flexible Gear Rack

How to maintain flexible gear rack?

1. Lubrication: Regularly lubricate the flexible gear rack according to the manufacturer's recommendations. Use the appropriate lubricant that is compatible with the rack material and operating conditions. Lubrication helps reduce friction, prevent wear, and ensure smooth operation.

2. Cleanliness: Keep the flexible gear rack clean and free from debris, dust, and contaminants. Regularly remove any accumulated dirt or foreign particles that may affect the gear rack's performance. Use a soft brush, lint-free cloth, or compressed air to clean the rack and its teeth.

3. Inspections: Periodically inspect the flexible gear rack for signs of wear, damage, or misalignment. Look for any worn or chipped teeth, cracks, or deformations. Check for proper engagement with the pinion gear and ensure there is no excessive backlash. Promptly address any issues or abnormalities to prevent further damage.

4. Alignment: Check the alignment of the flexible gear rack periodically. Ensure that it is properly aligned with the mating pinion gear. Misalignment can lead to increased wear, noise, and reduced performance. Follow the manufacturer's guidelines for alignment procedures and make any necessary adjustments.

5. Load Monitoring: Monitor and ensure that the flexible gear rack is not subjected to excessive loads beyond its specified capacity. Overloading can lead to accelerated wear and premature failure. Regularly check the load conditions and make adjustments if necessary.

6. Environmental Considerations: Consider the operating environment of the flexible gear rack. Protect it from extreme temperatures, excessive humidity, or exposure to corrosive substances. Implement measures such as using protective covers or seals to mitigate the effects of the environment.

7. Regular Maintenance Schedule: Establish a regular maintenance schedule for the flexible gear rack. This may include lubrication intervals, cleaning procedures, and inspection routines. Adhere to the maintenance schedule to ensure consistent performance and identify potential issues early on.

8. Operator Training: Provide proper training to the operators or maintenance personnel responsible for the flexible gear rack. Educate them on the importance of maintenance procedures, proper handling, and any specific maintenance requirements for the gear rack system.

flexible gear rack

Why Choose Ever-power Flexible Gear Rack?

  • Top quality at a fair price
  • 100% new
  • 99.9% customer satisfaction
  • Competent consulting
  • Short processing and delivery times
  • Inexpensive & fair shipping
  • Pay securely with PayPal

flexible gear rack

flexible gear rack

flexible gear rack

Q&A About Us

Q1. When can I get the price?

A: We usually quote within 24 hours after receiving your inquiry. If you are urgent, Please call us or let us know in your email so we can prioritize your inquiry.

Q2. How long is the lead time for the mold?

A: It all depends on the size and complexity of the mold. Usually, the delivery time is 25-35 days. If the mold is simple and insignificant, we can do it within 15 days.

Q3. I don't have drawings; how should I start a new project?

A: You can provide us with samples, and we will help complete the drawing design.

Q4. How to ensure product quality before delivery?

A: If you do not come to our factory and there is no third-party inspection, We will be your inspector. We will give you a video with details of the production process, including process reports, product dimensions, structural and surface details, packaging details, etc.

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Most of our products are exported to Europe or Americas, both standard and nonstandard products available. We can produce as per your drawing or sample. Material can be standard or as per your special request. If you choose us, you choose reliable.

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