ZhongYi Gear Manufacturer (a member of ZhongYi Machinery)
Product categories
Compare custom gear families by tooth geometry, shaft arrangement, linear or rotary motion, material, manufacturing route, and the technical information required for quotation.
Gear product families
The product structure separates gear forms that may look similar, including straight and spiral bevel gears, because they require different geometry, mating data, materials, assembly conditions, and search intent.
custom spur gears
Custom steel, stainless steel, ground, hubless, and plastic spur gears for parallel-shaft transmission.
External and internal mounting features by drawing
Metric module or diametral pitch data reviewed before quotation
Material and heat-treatment route selected for the duty
custom helical gears
Custom helical gears and pinions for smoother parallel-shaft transmission and controlled meshing.
Right-hand and left-hand helix details confirmed by drawing
Normal or transverse gear data clarified before production
Axial-load and bearing arrangement considered during review
custom internal gears
Custom internal gears and ring gears for compact transmission, reduction, and planetary-type assemblies.
Internal tooth geometry and mating pinion reviewed together
Ring blank, mounting holes, and datum surfaces made by drawing
Material and heat treatment assessed against section thickness
custom gear rack and pinion
Custom straight, helical, hardened, round, and corrosion-resistant rack-and-pinion components for linear motion.
Straight and helical tooth forms reviewed by drawing
Mounting holes, machined ends, joints, and datum faces configurable
Matched pinion and backlash conditions considered together
circular pitch rack and pinion
Custom CP racks and pinions for applications that use convenient whole-millimetre travel per pinion revolution.
Circular pitch and movement-per-revolution data confirmed
Matched CP pinion and rack geometry reviewed together
Straight, tapered, hardened, or special mounting forms by drawing
custom miter gears
Custom 1:1 miter gear pairs for changing drive direction between intersecting shafts.
One-to-one ratio and shaft angle confirmed by drawing
Straight, spiral, or zerol tooth forms reviewed
Pair matching, contact pattern, and mounting distance considered
custom straight bevel gears
Custom straight-tooth bevel gears and pinions for transmitting motion between intersecting shafts.
Straight-tooth gear and pinion geometry reviewed as a matched pair
Intersecting shaft angle, ratio, cone angles, and mounting distance confirmed
Finished bore, keyway, spline, hub, or integral pinion shaft made by drawing
custom spiral bevel gears
Custom curved-tooth spiral bevel gear and pinion sets for intersecting-shaft transmission systems.
Curved-tooth spiral gear and pinion reviewed as one matched set
Spiral hand, angle, ratio, shaft angle, and mounting distances confirmed
Contact pattern, backlash, bearing support, and lubrication included in technical review
custom screw gears
Custom crossed helical or screw gear pairs for transmitting light-to-moderate motion between non-parallel, non-intersecting shafts.
Crossed-axis geometry and shaft angle confirmed
Helix angle and hand reviewed for both mating gears
Material pair and lubrication considered for sliding contact
custom worm gears
Custom worm shafts, worm wheels, and matched sets for compact reduction and right-angle transmission.
Single- or multi-start worm geometry by drawing
Worm shaft and wheel materials reviewed as a pair
Ratio, center distance, backlash, and lubrication confirmed
custom plastic gears
Custom engineering-plastic gears and racks for low-mass, corrosion-conscious, or low-lubrication mechanisms.
Gear form and polymer selected for the actual environment
Metal hub, insert, or all-plastic construction by drawing
Thermal and moisture-related dimensional change considered
custom inch gears
Custom diametral-pitch spur gears and replacement components for inch-based machinery.
Diametral pitch and pressure angle confirmed
Inch bore, keyway, hub, and face dimensions by drawing
Replacement samples reviewed with mating and center-distance data
custom gear shafts
Custom integral spur, helical, bevel, and worm pinion shafts for compact transmission assemblies.
Spur, helical, bevel pinion, and worm shaft forms by drawing
Bearing journals, splines, threads, shoulders, and keyways integrated
Heat-treatment zones, straightness, and runout reviewed
custom gearbox components
Custom gears, shafts, pinions, worm sets, and matched bevel pairs for gearbox manufacturing and maintenance.
Gear and shaft components reviewed against the assembly
Spur, helical, bevel, and worm transmission parts by drawing
Ratio, center distance, bearing, and housing interfaces considered
custom ground helical gear rack
Precision DIN 6 and DIN 7 CNC ground helical gear racks and matched pinions for high-speed, low-noise linear motion and heavy-duty gantry drives.
Accuracy grade DIN 6 / DIN 7 with pitch error < 0.035 mm/m
19°31'42" Right-Hand or Left-Hand helix angle
6-side precision CNC surface grinding for true datum flatness
Induction hardened or case-carburized teeth (HRC 50-60)
Butt-joint continuous end machining with pre-drilled holes
custom planetary gears
High-torque, compact planetary gear sets including sun gears, planet pinions, planet carriers, and internal ring gears for precision reducers and mobile drivetrains.
Complete epicyclic set manufacturing: sun gear, planet pinions, carrier, and internal ring
Micro-geometry tooth profile and lead crowning for balanced planetary load sharing
Precision bored needle roller bearing seats with tight geometric concentricity
Carburized and CNC tooth flank ground gears (HRC 58-62, ISO Grade 5-7)
Single-stage and multi-stage reduction ratios (3:1 up to 100:1+)
custom spline shaft manufacturer
Precision involute and straight-sided spline shafts, splined sleeves, and couplings for heavy-torque power transmission and sliding drive connections.
Standard compliance: DIN 5480, DIN 5482, ANSI B92.1, ISO 4156, GB/T 3478, SAE J499
Involute spline module (M0.5 - M10) and DP pitch (DP 8/16, 12/24, 16/32, 24/48)
Flank-centered (side-fit) or major/minor diameter centering
Internal and external spline mating: shafts, sleeves, hollow hubs, and splined gear couplings
Total indicated runout (TIR) < 0.01 mm across precision ground bearing journals
hydraulic gear pumps
External hydraulic gear pumps, tandem dual-section units, and two-stage assemblies for agricultural tractors, forklifts, log splitters, and combine harvesters.
Pump architectures: Single-section, tandem dual-displacement, and two-stage high/low pressure
Nominal displacement range: 3.5 ml/r to 36.0 ml/r (tandem combinations up to 30/14 ml/r)
Maximum working pressure: Up to 25.0 MPa (250 bar / 3,625 psi)
Rotational speed capability: 500 to 3,600 r/min continuous and intermittent ratings
Port standards: UNF, metric fine (M14/M16/M18), BSP (G), and American NPT threads
Shaft options: Involute spline (SAE / DIN), cylindrical keyed, and tapered keyway drive shafts
Product structure
The catalog starts with the transmission function. Spur and helical gears serve parallel-shaft layouts; internal ring gears support compact internal mesh; straight bevel, spiral bevel, and miter gears change direction between intersecting shafts while remaining separate product families; screw and worm gears serve crossed-axis arrangements; and rack-and-pinion systems convert rotation into linear travel. Plastic and inch gears are separated because material behaviour and measurement systems create distinct procurement requirements. Gear shafts and gearbox components connect the individual tooth form to the complete assembly.
Each category page explains available product forms, practical selection factors, material considerations, applications, inspection points, and common buyer questions. The content is intended to help procurement teams and engineers identify missing technical data before contacting the factory. It does not treat a competitor series number, a photograph, or an outside diameter as sufficient proof of interchangeability.
ZhongYi works from buyer drawings, samples, or confirmed specifications. Exact module ranges, tolerances, hardness, accuracy grades, quantities, lead times, and documentation are reviewed for the individual enquiry rather than presented as universal capability claims. This keeps the product pages useful for search while protecting technical accuracy.
RFQ preparation
For custom gears, the quote quality depends on drawing accuracy and working-condition details. This checklist reduces back-and-forth communication for overseas buyers.
Gear type, module or diametral pitch, pressure angle, and tooth count
Mating gear, ratio, center distance, shaft arrangement, and rotation direction
Bore, keyway, spline, hub, bearing seats, mounting holes, and datum surfaces
Material, heat treatment, hardness, tooth finishing, and corrosion conditions
Load, speed, duty cycle, lubrication, temperature, backlash, and service environment
Drawing revision, quantity, inspection criteria, documentation, and packaging needs
Request a quote
Our team can review your gear type, material, heat treatment, tolerance, order quantity, and application conditions before quotation.
