Self-Lubrication Flexible MC Nylon Gears Rack | Plastic Nylon66 Gear Rack
Ever-Power self-lubricating flexible MC nylon and Nylon66 plastic gear racks are CNC machined to your drawing with a tolerance of -0.1 mm to +0.1 mm. Material options cover plastic and nylon PA grades at 1.5 g/cm2 density, in natural/white, black, and customer-specified colours. Certification options include ISO 9001:2015, SGS, FDA, and RoHS — covering food-contact and hazardous-substance compliance requirements for pharmaceutical, food processing, and medical device applications. The self-lubricating polymer tooth surface requires no external lubricant throughout the service life, making these racks the preferred choice for maintenance-free automation drives. Custom modules, sizes, and mould materials per your requirement.
Self-Lubrication Flexible Nylon Gear Rack — Overview
Ever-Power self-lubricating flexible nylon gear racks are CNC-machined from Nylon66, MC nylon, and plastic PA grades specifically selected for their inherent low-friction, self-lubricating surface properties. Unlike steel racks — which require periodic grease or oil application to prevent metal-to-metal contact and premature tooth wear — a self-lubricating nylon rack generates a continuous microscopic polymer film at the tooth contact zone during operation. This film provides adequate boundary lubrication for the loads and speeds of most industrial and commercial rack drives without any external lubricant, maintenance schedule, or lubrication access requirement.
The flexible designation reflects the elastic compliance of the nylon tooth under load — the polymer tooth surface deforms slightly at the contact point and recovers on exit, absorbing the mesh impact energy that would otherwise radiate as structure-borne noise. This makes nylon66 self-lubricating racks significantly quieter than steel racks at the same module and speed. Combined with ISO 9001:2015 quality certification and the availability of SGS, FDA, and RoHS certification options, these racks cover applications from residential gate drives and greenhouse automation through to pharmaceutical equipment and food-contact conveyors where regulatory compliance is a requirement.
Technical Specifications
| Parameter | Value / Options |
|---|---|
| Product Type | Plastic gear rack — self-lubricating flexible nylon |
| 재료 | Plastic, Nylon (PA6 / PA66 / Nylon66 / MC Nylon); per customer specification |
| Mould Materials | As per customer requirement |
| Tolerance | -0.1 mm to +0.1 mm |
| Density | 1.5 g/cm² (varies by grade) |
| Size | Per customer drawing |
| Processing | Machining (CNC milling and hobbing) |
| Colour | Natural / white, black, and customer-specified |
| 인증 | ISO 9001:2015; SGS, FDA, RoHS, test report available on request |
| Lubrication | Self-lubricating — no external lubricant required in standard service |
| Module | M1 to M8 standard; custom modules per drawing |
Self-Lubrication Mechanism — Friction and Wear Comparison
The self-lubricating property of nylon and MC nylon arises from the inherently low coefficient of friction of polyamide polymer against steel — the result of weak adhesion between the polymer surface and the steel pinion tooth at the molecular level. The table below compares the dry friction coefficient and wear rate of common rack material pairs, showing why nylon and MC nylon consistently outperform steel for maintenance-free drives.
| Material Pair | Coefficient of Friction (dry) | Wear Rate | Lubrication Needed |
|---|---|---|---|
| Nylon66 rack vs steel pinion | 0.10-0.25 | Low | No — self-lubricating |
| MC nylon rack vs steel pinion | 0.08-0.20 | Very Low | No — oil-impregnated grade available |
| POM rack vs steel pinion | 0.10-0.30 | Low | No — self-lubricating |
| Steel rack vs steel pinion | 0.15-0.40 | Moderate | Yes — periodic lubrication required |
| Bronze rack vs steel pinion | 0.08-0.15 | Low | Beneficial |
| UHMW-PE rack vs steel pinion | 0.05-0.15 | Very Low | No — lowest friction of all plastic grades |
응용 프로그램
🏭 Industrial Automation
Nylon66 self-lubricating racks are widely used in industrial automation for conveyor diverters, positioning arms, and linear transfer systems where periodic lubrication of the rack is not practical — either because access is difficult, the cycle rate is too high for manual maintenance, or lubricant contamination of adjacent product is not acceptable.
🌿 Greenhouse and Agricultural
Flexible nylon66 racks for ventilation window actuators and shading screen drives in controlled-environment agriculture. The self-lubricating surface requires no maintenance intervention during the growing season, and the flexible construction allows the rack to follow slightly curved rail paths without a purpose-machined curved rack profile.
🤖 Medical and Laboratory Equipment
FDA-compliant grades of nylon for medical device positioning drives, laboratory analysis equipment, and pharmaceutical automation. The FDA and RoHS certification options verify food-contact and hazardous-substance compliance — critical for equipment used in drug manufacturing and medical device assembly environments.
🏽 Residential Gate and Door Drives
Nylon66 self-lubricating racks for residential sliding gate motor systems. The maintenance-free operation — no grease replenishment required across the full service life — is the primary reason nylon racks have displaced steel racks in the residential gate market over the past two decades.
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Material of Plastic Gear Rack
Plastic racks can be made from a variety of materials. The traditional PR series uses MC nylon, while the PRF series adds end machining to connect multiple sections for long-travel drives. The polyacetal-based DRFD and DRFK series include mounting holes. The injection-moulded DR series has unique flexibility properties suitable for curved-path locations. The material selected depends on the daily cycle count, the required force, and the environment — moisture, chemical exposure, and temperature. Dimensional stability is critical for maintaining gear tooth contact ratio, tooth tip clearance, and overall geometry throughout the service life.
Quality Assurance and Manufacturing
Ever-Power self-lubricating nylon gear racks are produced under ISO 9001:2015 quality management. Incoming polymer material is verified for grade conformance and density before CNC machining. Tooth geometry, pitch, tolerance, and cross-section dimensions are inspected on every batch. SGS, FDA, and RoHS certification documentation is available on request and supplied with the order for regulated applications.
ISO 9001:2015 and Quality Certificates
Documentation with every order:
- ISO 9001:2015 inspection record — tooth pitch, tolerance, dimensions against drawing
- Material datasheet — grade, density, mechanical properties
- SGS / FDA / RoHS certificates available on request for regulated applications
Related Gear Products
Ever-Power manufactures the complete range of industrial gear types alongside plastic racks. Matched plastic gears, steel spur pinions, steel gear racks, and all gear types are available from the same source.
Plastic Gears
Nylon and POM pinions for all-plastic, lubrication-free rack and pinion drives.
Spur Gears
Steel spur pinions to mesh with nylon racks — the most common paired configuration.
Helical Gears
Helical pinions for quieter, higher-load rack drives and speed reducer stages.
Planetary Gear Sets
Compact reducers for servo motor to pinion shaft in precision plastic rack drives.
Worm Gear Wheels
Self-locking worm reducers for vertical rack axes holding position without a motor brake.
Ring Gears
Large-diameter ring gears for rotary kilns, slewing drives, and large machinery.
Frequently Asked Questions
What certifications are available for food-contact or pharmaceutical applications?
This rack range is available with SGS testing, FDA food-contact compliance certification, and RoHS hazardous-substance compliance documentation in addition to the standard ISO 9001:2015 quality certificate. For pharmaceutical and medical device applications requiring full material traceability, a detailed material datasheet covering polymer grade, additive content, and compliance status is supplied with every order. Specify your required certification at the enquiry stage and we will identify which polymer grade and documentation package is appropriate for your regulatory environment.
What does the tolerance of -0.1 mm to +0.1 mm apply to for a gear rack?
The tolerance of -0.1 mm to +0.1 mm applies to the overall cross-section dimensions — the rack body height, width, and thickness — as machined to your drawing. Tooth pitch tolerance is held separately under the DIN accuracy class specification for the module. For most industrial applications, ±0.1 mm on body dimensions combined with DIN 7-9 tooth accuracy is adequate. Tighter body dimension tolerances (±0.05 mm or better) are available on request for applications where the rack must be a close sliding fit in a precision housing.
Is there a minimum order quantity for custom sizes?
There is no fixed minimum order quantity for custom-sized self-lubricating nylon racks. Prototype and sample quantities of one or a few pieces are accepted for development and evaluation purposes. Production pricing is available from small batch quantities upward. Lead time for custom dimensions is typically 7-14 working days from drawing approval; standard module racks in common lengths are available from stock for faster delivery.
Request a Quotation for Self-Lubricating Nylon Gear Racks
Specify your material grade, tolerance requirement, module, size, and certification needs. We return a price with applicable certification options within 24 hours.
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