Micro Spur Gears
Custom Micro Spur Gears From Customer Drawings
Micro Spur Gears Manufacturer for Compact Precision Transmission Systems
MH manufactures custom micro spur gears for compact gearboxes, robot actuators, miniature motors, aerospace instruments, medical mechanisms and precision automation. We review tooth count, module, pressure angle, hub or bore structure, face width, runout, burr control, heat treatment and inspection basis before confirming production feasibility.
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Straight-Tooth Micro Gears Need More Than a Simple Size MatchMicro spur gears look simple because the teeth are straight, but small errors in tooth profile, bore concentricity, face width, hub thickness, burr condition or heat treatment can cause noise, unstable meshing, excessive backlash or poor assembly fit. MH evaluates the whole gear part, not only the outside diameter and tooth count. M0.2-M1.0 / Micro spur gears / Hub gears / Pinion gears / Bore and shaft fit / Drawing-based OEM |
What Are Micro Spur Gears?
Micro spur gears are small straight-tooth gears used to transmit motion between parallel shafts. They are common in compact gear trains because the tooth geometry is efficient, easy to integrate and suitable for miniature transmission layouts.
For custom projects, the important purchasing question is not only whether the supplier can make a small gear. The supplier must also understand gear datum, bore or shaft fit, hub design, face width, tooth edge condition, meshing requirement and how the part will be inspected after machining or heat treatment.
Micro Spur Gear Capability Parameters
This table helps purchasing engineers check whether a micro spur gear project is ready for MH drawing review and quotation.
| Product Scope | Micro spur gears, micro pinion gears, hub-type spur gears, thin spur gears, spur gear shafts, compound spur gears and drawing-based special spur gear parts |
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| Typical Module Range | M0.2-M1.0, including common M0.2, M0.3, M0.5 and M1 drawing-based examples |
| Tooth Count Examples | Z10, Z16, Z18, Z20, Z25, Z32, Z38, Z52, Z56 and other tooth counts according to customer drawings |
| Accuracy Reference | ISO Grade 5 to 8, JIS N5 to N8, DIN 5 to 8, AGMA 8 to 11 when required by the drawing and inspection basis |
| Material Options | S20C, S45C, SCM415, SCM430, SCM440, SNCM420, C5191, 20MnCr5 / 20MnGr5, stainless steel, brass and customer-specified materials |
| Key Control Points | Tooth profile, pitch stability, burr control, bore diameter, hub thickness, face width, runout, concentricity, surface finish and batch consistency |
Before the Product List: Choose the Right Spur Gear Structure
The product list below can be used as a reference for structure type. Final manufacturability still depends on the drawing, material, gear accuracy, heat treatment and inspection method.
Bore-Type Micro Spur GearsUsed when the gear is assembled onto a shaft. Bore size, concentricity and fit tolerance are key review points. |
Hub-Type Spur GearsUsed when the design needs support length or assembly location. Hub thickness and datum selection affect runout. |
Micro Spur Pinion ShaftsUsed when teeth and shaft are integrated. Shaft straightness, runout and bearing seat dimensions require careful planning. |
Micro Spur Gear Drawing Case
A good micro spur gear case should help buyers see how the gear teeth connect with the rest of the part. MH reviews the gear parameters together with bore, hub, face width, datum, material, hardness and inspection requirements.
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Example Review: Spur Gear Teeth, Hub and Bore in One Manufacturing PlanFor a micro spur gear with a hub or center bore, tooth cutting is only one part of the work. The buyer also needs stable bore fit, controlled runout, consistent face width, burr-free tooth edges and a practical inspection method. MH evaluates these points before confirming the process route. Spur gear drawing / Hub and bore review / Tooth edge quality / Runout control / Batch repeatability |
Manufacturing Challenges of Micro Spur Gears
For small-module spur gears, buyers usually care about meshing stability and assembly fit. The supplier must control the tooth geometry and the non-tooth features together.
| Tooth Profile and Pitch Stability | Small tooth geometry is sensitive to tool condition, cutting method and measurement basis. Pitch error can affect noise, backlash and motion repeatability. |
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| Bore, Hub and Face Width | The center bore, hub shoulder and face width often determine whether the gear can assemble correctly and run smoothly with the mating part. |
| Burrs and Tooth Edge Condition | Tooth burrs can affect meshing, noise, wear and assembly cleanliness. Burr control needs to be planned together with material and tooth size. |
| Heat Treatment and Final Inspection | When hardness is required, material selection, deformation risk, post-treatment dimensions and inspection method should be confirmed before batch production. |
Process Route and Inspection Support
Micro spur gear manufacturing may combine gear cutting, precision turning, milling, EDM, heat treatment, finishing and inspection. MH selects the process according to the drawing rather than using one fixed route for every gear.
Gear Cutting and Small Precision FeaturesRepresentative equipment resources include Tokyo Wako H102C / 120A, Mikron 102-0.5, Ningjiang YG3612 / YKJ3610 and Baocheng T-YG3603 hobbing equipment. Small features can be supported by Schaublin SBL series, Hardinge T42 / ST-216B and MAZAK INTEGREX i-250 when the gear includes shaft or hub structures. |
Inspection and Surface ReviewZEISS CMM like ZEISS CONTURA, Mitutoyo height gauges and roughness testing can support review of key dimensions, runout, surface finish and inspection basis. Heat treatment, plating, passivation and blasting can be evaluated according to drawing notes. |
Typical Applications of Micro Spur Gears
Different applications create different purchasing risks. MH reviews micro spur gears according to the actual working condition, not only the product name.
Robot Actuators and GearboxesImportant concerns include backlash, meshing smoothness, repeated positioning, compact gear train layout and batch consistency. |
Miniature Motors and PumpsGear noise, tooth surface quality, bore fit, wear resistance and lubrication environment may affect the final product performance. |
Aerospace and Precision InstrumentsThese projects often need stable materials, controlled process records, inspection documentation and reliable dimensional repeatability. |
Information Required for Quotation
For fast review, send the gear drawing and the assembly information that affects meshing and inspection.
| 2D drawing, 3D model, sample photo or existing gear data | Module, tooth count, pressure angle, face width and mating gear information |
| Bore size, shaft fit, hub dimensions, datum, runout and key tolerances | Material, hardness, heat treatment, surface treatment and burr requirements |
| Prototype quantity, batch quantity and delivery target | Application background, inspection standard and documentation requirements |
Related Micro Spur Gear Pages
These related pages help buyers compare micro spur gears with broader micro gear, fine pitch gear and supporting precision machining capabilities.
Micro Spur Gear FAQ
This second-level FAQ is written for purchasing engineers evaluating custom micro spur gear projects.
Are these standard catalog micro spur gears?
No. MH mainly manufactures custom micro spur gears according to customer drawings, samples, 3D models or technical specifications. Catalog-like examples can be used for reference, but final production follows the approved drawing.
Can MH manufacture M0.2 and M0.3 micro spur gears?
MH can review M0.2 and M0.3 micro spur gear drawings. Because the teeth are very small, manufacturability depends on tooth geometry, material, burr requirement, part structure and inspection basis.
Can MH make micro spur gears with hubs or center bores?
Yes. Hub-type and bore-type spur gears can be evaluated from drawings. Important review points include bore tolerance, hub thickness, datum, face width, runout and fit with the mating shaft.
Can MH manufacture hardened micro spur gears?
Yes, hardened micro spur gears can be reviewed when the material and hardness requirement are clear. Heat treatment deformation, final bore size and tooth accuracy should be considered before batch production.
What gear accuracy can be discussed for micro spur gears?
MH can discuss ISO Grade 5 to 8 depending on gear structure, material, heat treatment, tooth size and inspection method. If the drawing uses JIS, DIN or AGMA references, MH reviews the specified standard with the customer.
What information is needed for quotation?
Please send a 2D drawing or 3D model, module, tooth count, pressure angle, material, heat treatment, bore or shaft dimensions, tolerance, quantity, application background and inspection requirements.
Can MH review micro spur gears from samples?
A sample can support initial discussion, especially when the old drawing is missing. For production, MH still needs confirmed dimensions, material, tolerances and acceptance criteria to reduce manufacturing and inspection risk.
Need Custom Micro Spur Gears Made From Your Drawing?
Send your gear drawing, 3D model, sample photo or assembly requirement. MH will review tooth geometry, bore or hub structure, material, heat treatment, inspection basis and manufacturability before quotation.
Contact MH for Drawing ReviewAs one of the most professional micro spur gears manufacturers and suppliers in China, we're featured by quality products and good price. Please rest assured to wholesale high quality micro spur gears made in China here from our factory.