Gear Rack and Pinions | Custom Precision Carbon Steel, OEM Supply
Ever-Power gear rack and pinion sets are precision-matched pairs — rack and pinion engineered together so tooth spacing, pressure angle, and backlash are verified as a unit before dispatch. Available in modules M3 through M12 and above in C45 carbon steel, 40Cr and 42CrMo alloy steel, stainless steel, brass, POM, and aluminium, with DIN7 to DIN9 precision grades and teeth hardened or milled to your specification. Standard lead time is 20 business days for samples and 25 days for production runs; payment by T/T or L/C. ISO 9001:2015 certified — material certificate and dimensional report included with every order.
Gear Rack and Pinions — Product Overview
Ever-Power crémaillère et pignon sets are precision-matched linear actuator pairs that convert rotating shaft motion into controlled linear displacement. A rack and pinion set comprises two elements: the rack — a straight or profiled bar with teeth cut along one face — and the pinion, a small cylindrical gear that meshes with the rack. When the pinion is rotated by a motor or by hand, its engagement with the rack teeth translates that rotation into exact linear motion at a rate determined by the pinion pitch circle diameter and tooth count.
Supplying rack and pinion as a matched set — rather than sourcing rack and pinion separately — guarantees that module, pressure angle, helix angle (for helical variants), and tooth quality grade are consistent between the two mating components. Ever-Power rolls every matched set on a gear testing machine before dispatch; the measured backlash and contact pattern are recorded against the order reference so that any field query can be traced back to the specific pair.
With 20 years of gear rack manufacturing experience, Ever-Power produces rack and pinion sets in round and rectangular cross-section rack profiles, steel, stainless steel, brass, and engineering plastic materials, and in modules M3 through M12 as standard — with M1, M1.5, M2, and custom non-standard modules available to order. Both spur (straight-tooth) and helical tooth forms are available. OEM drawings accepted in DXF, DWG, STEP, and PDF formats.
Technical Specifications
| Parameter | Standard Range / Options |
|---|---|
| Module | M3, M4, M5, M8, M12 standard; M1, M1.5, M2, M2.5, M6, M10 and custom modules available |
| Precision Grade | DIN7, DIN8, DIN9; DIN6 for precision applications |
| Tolerance | 0.001 mm to 0.1 mm per specification grade |
| Teeth Treatment | Hardened, milled; ground available for precision grade |
| Rack Profile | Rectangular flat rack; round cross-section rack; spur or helical tooth form |
| Material — Steel | C45 (1045), A3 low carbon steel, 40Cr, 20CrMnTi, 42CrMo alloy steel |
| Material — Other | Stainless steel 304/316, brass, copper, POM acetal, nylon PA66, aluminium 6061 |
| Surface Treatment | Zinc plating, nickel plating, passivation, oxidation, anodizing, Geomet, Dacromet, black oxide, phosphatizing, powder coating, electrophoresis |
| Finition | Shot blast, sandblast, heat treatment, annealing, tempering, polishing, anodizing, zinc plating |
| Standards | ISO, DIN, ANSI, JIS, BS; non-standard per drawing accepted |
| Sample Lead Time | 20 business days |
| Production Lead Time | 25 business days for bulk orders |
| Payment Terms | T/T: 30% deposit before production, balance before delivery; L/C accepted |
| Conditionnement | Plastic bag plus carton or wooden packing; shipped by UPS, EMS, DHL, FedEx worldwide |
| Application | Automatic control machines, semiconductor, general industry, medical equipment, solar energy, machine tools, parking systems |
| Certification | ISO 9001:2015; material certificate and dimensional inspection report with every order |
How Gear Rack and Pinion Works
A gear rack and pinion is a linear actuator in its simplest form. The pinion gear is mounted on a shaft driven by a motor or hand wheel. As the pinion rotates, its teeth engage the rack teeth one by one, advancing the rack linearly by exactly one pitch per tooth engagement. The linear velocity of the rack equals the pitch-circle circumference of the pinion multiplied by the rotational speed in revolutions per second.
Two configurations are used in practice. In the fixed-rack / travelling-pinion arrangement, the rack is bolted to the machine base and the pinion — together with its motor and gearhead — travels along the rack. This is the standard for CNC gantries, robotic seventh-axis tracks, and portal cranes. In the fixed-pinion / travelling-rack arrangement, the pinion is fixed in the housing and the rack passes through it, delivering linear motion at the rack end. This is the configuration used in steering gear boxes, bench presses, and linear actuators.
Rack and Pinion vs Ball Screw
For strokes above 2 m or forces above 5 kN, rack and pinion is more practical and cost-effective than a ball screw. The rack has unlimited stroke length — sections are simply butted — while a ball screw is limited by critical speed and deflection. The rack is highly efficient (95-99%) and easy to maintain. The ball screw offers lower backlash at short strokes and high positioning accuracy but becomes impractical and costly as stroke increases.
Custom Rack Design Factors
Custom rack and pinion design is governed by drive force, speed-versus-time cycle, axis bearing friction, and external loads on the axis. Three accuracy metrics must also be addressed: backlash (clearance between tooth flanks), pitch deviation (difference between theoretical and actual rack length), and tooth quality grade (accuracy of manufactured tooth flanks). All three affect positioning accuracy and noise level of the completed rack and pinion set.
Matched Set Advantage
Sourcing rack and pinion from the same manufacturer guarantees module and pressure angle consistency. Ever-Power rolls every matched set on a gear testing machine and photographs the contact pattern before dispatch. If a field issue arises, the roll-test record allows the root cause to be identified quickly — worn contact at a specific position indicates a mounting problem rather than a manufacturing defect, saving time and cost at commissioning.
Applications of Gear Rack and Pinion Sets
⚙ Automatic Control Machines
CNC routers, laser cutters, plasma cutting gantries, and automated assembly lines rely on rack and pinion sets for their X and Y travel axes. The linear actuator principle gives these machines unlimited stroke at high traverse speeds unachievable with ball screws at equivalent cost.
🔌 Semiconductor Industry
Wafer handling systems, probe stations, and semiconductor inspection equipment use precision rack and pinion sets in stainless steel or aluminium with DIN6-7 accuracy. Low particulate generation and cleanroom-compatible surface finishes are specified for these applications.
💉 Medical Equipment
Patient positioning tables, surgical robots, and diagnostic imaging linear axes use stainless steel rack and pinion sets with passivated or electropolished surfaces. Quiet, smooth motion at low speeds and precise positioning are the primary requirements in this sector.
☀ Solar Energy Equipment
Single- and dual-axis solar tracker systems use rack and pinion drives for panel tilt and azimuth positioning. Outdoor corrosion resistance is critical; hot-dip galvanized or stainless steel racks with sealed pinion housings are specified for 20-year service life in tracker installations.
🔩 Machine Tools
Large planer mills, vertical boring machines, and gantry-type machining centres use heavy-module (M6-M12) alloy steel rack and pinion sets for their travel axes. Carburized and induction-hardened teeth at HRC 58-62 surface hardness withstand the continuous high-load duty cycles of metalcutting operations.
🚘 Automated Parking Systems
Multi-storey automated car park pallets and car carriers use M4-M8 rack and pinion sets for vertical and horizontal transfer. The drive must handle peak shock loads during vehicle loading and repeated daily cycles over a 15-year design life — through-hardened alloy steel sets satisfy both requirements.
Custom Gear Rack and Pinion Manufacturing
CNC Rack Milling
CNC rack milling machines cut teeth continuously up to 2,000 mm per section; longer racks through repositioning. All racks are milled and matched for continuous travel and drilled or tapped to customer mounting hole patterns.
Material Range
Mild steel, carbon steel, alloy steel, stainless steel, aluminium, brass, bronze, and engineering plastics in rectangular, square, and round cross-sections. Bevel-form, double-sided, and cylindrical rack profiles are also available.
Post-Process Options
CNC machining centres perform drilling, tapping, and counter-boring. Racks are hardened, plated, coated, blasted, polished, or passivated per specification. Flame hardening for large-module racks is available for very heavy-duty applications.
Reverse Engineering
Send us a damaged or worn gear rack and pinion. Our technical team measures module, pressure angle, tooth count, face width, and mounting geometry using optical projection and CMM equipment, then produces a replacement set to the reverse-engineered specification.
Manufacturing Process
Step 1 — Raw Material
Raw material bar stock verified by spectrochemical analysis before production.
Step 2 — Tooth Cutting
Teeth cut on CNC rack milling or hobbing machine to specified module and pressure angle.
Step 3 — Deburring
Tooth-end burrs removed and edges chamfered to prevent handling damage and sharp corners.
Step 4 — Straightening / HT
Pressure straightening after tooth cutting; induction hardening or carburising where specified.
Step 5 — End Machining
End faces and mounting holes machined in CNC machining centre to drawing specification.
Step 6 — Surface Treatment
Black oxide, zinc plating, phosphating, or hard chrome applied per customer specification.
Key Production Equipment
Gear Hobbing Machine
Gear Milling Machine
CNC Gear Grinding Machine
Gantry CNC Machining Centre
Internal Grinding Machine
Planer Grinding and Turning
Applications by Industry
Quality Assurance
Precision Measurement Equipment
ISO 9001:2015 and Quality Certificates
Ever-Power operates an ISO 9001:2015 quality management system. Every gear rack and pinion set order ships with a material certificate, heat treatment record, dimensional inspection report, and a gear roll-test photograph showing the contact pattern at the test load. Advanced machining equipment — including optical projectors and 16 full-process monitoring systems — supports precision checking throughout production. The facility currently operates 30 fully automatic precision CNC rack milling lines.
Related Gear Products
Browse the complete gear rack product range on the Ever-Power main site, including helical racks, round racks, ground precision racks, and application-specific rack products. Also see worm gear wheels for self-locking vertical rack drive stages.
Related Gear Products
Ever-Power manufactures the complete range of industrial gear types alongside gear racks. If your drive system requires matched pinions, reduction gears, or associated gear types, the following product families are available from the same source.
Spur Gears
Pinion gears matching our spur gear rack range; standard modules m0.5 to m20.
Ring Gears
Large-diameter internal or external ring gears for rotary and slewing drives.
Engrenages coniques
Straight and spiral bevel gears for right-angle drives and gear motor input stages.
Helical Gears
Helical pinions for high-speed, low-noise rack drives and reduction stages.
Planetary Gear Sets
Compact in-line reducers paired to servo motors; output shaft connects to the rack pinion.
Worm Gear Wheels
Self-locking worm reducers for vertical rack axes holding position under gravity load.
Plastic Gears
Nylon, POM, and polycarbonate pinion gears for light-duty, lubrication-free rack drives.
Frequently Asked Questions
Are you a manufacturer or a trading company?
Ever-Power is a factory. We manufacture all gear rack and pinion products in-house with our own CNC rack milling machines, gear hobbers, heat treatment equipment, and CMM inspection systems under ISO 9001:2015. We do not re-sell third-party products.
Can you manufacture custom rack and pinion sets from our drawing?
Yes. Submit your drawing in DXF, DWG, STEP, or PDF format. Our professional R&D team reviews the specification, advises on any producibility adjustments, and returns a quotation with price and lead time. We also accept sample parts for reverse engineering when no drawing is available.
What is the delivery time?
Sample orders: 20 business days from payment receipt. Bulk production orders: 25 business days from payment receipt. Our unique manufacturing process combined with a large stock of raw materials, tooling, and semi-finished parts allows us to meet these lead times consistently. For urgent requirements, contact us directly and we will advise the earliest possible dispatch date.
Can rack and pinion be made in materials other than steel?
Yes. We produce rack and pinion sets in stainless steel, aluminium, brass, bronze, POM acetal, nylon PA66, and polycarbonate in addition to carbon and alloy steels. The price depends on the specified material, tooth type, module, length, accuracy grade, and any special customisation. Include your material requirement with your enquiry and we will price accordingly.
Do you have a minimum order quantity?
Minimum order requirements depend on the specific part — module, material, and configuration all affect the economic batch size. Send us your drawing or specification and we will state the minimum quantity alongside the unit price. For prototype and development quantities of one to five sets, we are typically able to accommodate the request, particularly for OEM programmes at the design stage.
Can you manufacture metric gear racks and pinions to any module?
Yes. We have tooling to manufacture gear racks and pinions in any metric module. Our standard production range is M1 through M32 in straight racks; helical racks are standard to M12 with larger modules on request. Inch diametral pitch (DP) sets are also available. Non-standard modules for OEM replacement programmes are regularly produced — specify the module and pressure angle with your enquiry and we will advise on tooling availability.
Request a Quotation for Gear Rack and Pinion Sets
Send your drawing, module, material, required quantity, and delivery date. We return a price and lead time within 12 to 24 hours.
Informations complémentaires
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