Brass Spur Gear – Copper, M0.15-M2.2, AGMA 13, ODM/OEM

Brass spur gears occupy a specific application niche in precision gear manufacturing — they combine the spur gear's fundamental advantages (parallel shaft drive, constant velocity ratio, no axial thrust, simple assembly) with the unique material properties of brass and copper: inherent corrosion resistance without surface coating, natural lubricity against a mating steel gear, non-sparking in flammable or explosive atmospheres, electrical conductivity where grounding of the gear train is required, and machinability that allows very fine-pitch gear profiles to be cut with higher surface quality than is achievable in steel at the same module. Korea Ever-Power produces brass spur gears from Φ3 mm outer diameter at module M0.15 — the finest standard gear pitch produced in this product family.

Korea Ever-Power's precision brass spur gears are manufactured to meshing grades JGMA 1, JIS 6, AGMA 13, DIN 5, and AGMA 12 — among the highest accuracy grades achievable in this size range. ODM and OEM service. ISO 9001:2008 / TS16949 certified. Vacuum-packed in plastic tray. Delivered by DHL and UPS. Quotation within 24 hours; samples available after price confirmation from the Chinese factory or European agent storage.

Parallel Shaft Drive — No Axial Thrust

Brass spur gears transmit movement and power between parallel shafts with no axial thrust force. In compact instrument mechanisms and precision medical devices where shaft support is by miniature ball bearings or plain bushings, the elimination of axial thrust directly reduces bearing loading and mechanism complexity.

Small Tolerances, High Precision

Brass is the best-machinable standard gear material — it cuts cleanly, produces fine surface finishes, and does not work-harden at the cutting edge. These properties allow the finest-pitch brass spur gears (M0.15–M0.3) to be machined to AGMA 13 / DIN 5 accuracy with consistent tooth profile across the full face width — accuracy levels that are harder to achieve in steel at the same module due to steel's tendency to work-harden and produce a rougher cut surface at fine pitch.

Non-Sparking — Safe in Flammable Environments

Brass and copper do not produce sparks on impact or friction contact. In fuel system gear drives, gas meter drives, and industrial zones classified as potentially explosive atmospheres (ATEX zones), brass spur gears eliminate the ignition risk from metallic spark generation that steel gears — particularly hardened steel — can produce under abnormal loading conditions.

Corrosion Resistant — No Coating Required

Brass resists atmospheric oxidation, moisture corrosion, and most organic solvent exposure without a surface coating. In outdoor instruments, marine equipment, and medical devices where maintaining dimensional accuracy at the tooth flanks through the service life is critical, the elimination of coating (which adds variable thickness to the tooth profile) is a design advantage over coated carbon steel gears.

Natural Lubricity Against Steel

A brass spur gear running against a steel pinion has a lower friction coefficient and lower adhesive wear rate than steel-on-steel — the dissimilar metal pair resists galling (cold welding) at the tooth contact. This natural anti-galling property makes brass the preferred gear material in lightly lubricated or intermittently lubricated precision drives where steel-on-steel galling would quickly destroy the tooth surface.

ODM / OEM Design and Manufacturing

Korea Ever-Power's professional design team has rich experience in brass spur gear design and manufacturing. ODM service covers gear design from application requirements (torque, speed, centre distance, material, accuracy grade) through drawing production and sample confirmation. OEM service covers production under the customer's brand name with customer part number marking and custom packaging.

Automotive Instrument and Fuel Systems

Brass spur gears M0.3–M1.5 in speedometer drives, odometer mechanisms, fuel pump gear trains, and turbocharger oil pump drives. Non-sparking property suits fuel-adjacent applications; corrosion resistance in automotive fluid environments suits long-service-interval sealed gear trains. TS16949 certification meets automotive OEM supplier requirements.

Military Equipment

Brass spur gears M0.2–M1.0 in military night vision targeting systems, compass mechanisms, and communications equipment. Non-magnetic property prevents interference with compass and electronic navigation systems; corrosion resistance in field-deployed equipment without maintenance coating suits military logistics requirements.

Aircraft Instrument Drives

Brass spur gears M0.15–M0.5 AGMA 13 in altimeters, airspeed indicators, fuel flow meters, and aircraft clock mechanisms. The AGMA 13 accuracy grade ensures constant velocity ratio transmission in altitude and speed indicator drives where transmission error would directly cause instrument reading error.

Mechanical Instruments and Clocks

Brass spur gears M0.15–M0.5 in mechanical clocks, watches, and precision instrument gear trains. Brass has been the standard material for clock and instrument gear trains for centuries — its machinability at fine pitch, natural lubricity (clock oil is thin and must not degrade the gear surface), and corrosion resistance are the properties that clock and instrument makers have relied on.

Medical Devices

Brass or copper spur gears M0.3–M1.5 in dental instrument drives, surgical tool actuators, and laboratory analysis equipment. Copper's anti-microbial surface property is an additional advantage for gears in direct contact with instrument surfaces in clinical environments. Both materials are autoclave-compatible within the low-temperature sterilisation cycle range.

Electrical Grounding Mechanisms

Copper spur gears in mechanism drives where the gear train must provide a continuous electrical ground path between the motor shaft and the driven mechanism — semiconductor handling equipment, precision measurement instruments, and medical imaging device positioning drives where static charge accumulation on the rotating mechanism must be prevented.

When can I get a quotation?

Korea Ever-Power quotes within 24 hours of receiving the enquiry. If the quotation is urgently required, state this at the start of the enquiry message and it will be treated as priority. To receive the fastest and most accurate quotation, provide the module, tooth count, bore diameter, face width, material (brass or copper), accuracy grade (AGMA 13 / DIN 5 standard; state if a lower grade is acceptable), and required quantity.

How do I get a sample to check quality?

After price confirmation, samples can be requested to check quality before production commitment. The sample can be sourced from the Chinese manufacturing facility (production sample from drawing) or directly from the European agent storage if a matching standard configuration is in stock — which provides faster delivery for evaluation. Contact Korea Ever-Power with the drawing or specification after receiving the quotation, and we will confirm the sample source and delivery time.

Can Korea Ever-Power design the brass spur gear for my application?

Yes — Korea Ever-Power has a professional design team with rich experience in precision gear design and manufacturing. For ODM customers who provide the application requirement (required torque, speed, centre distance, material preference, accuracy grade, and operating environment) rather than a finished gear drawing, the design team will calculate the gear geometry, select the module, propose the tooth count combination, and produce a drawing for customer approval before production. This service covers brass, copper, and all other spur gear materials in the standard module range M0.15–M2.2.

What file formats are accepted for design submission?

Korea Ever-Power accepts PDF, CorelDraw, and high-resolution JPG files. For 3D CAD designs, STEP and IGES files are also accepted — confirm at the enquiry stage. For customers who do not have a CAD drawing, a hand sketch with the critical dimensions (OD, face width, bore, tooth count, and any special features) is sufficient to begin the quotation process. Korea Ever-Power will produce the formal drawing from the sketch and submit for approval before production.

Why is AGMA 13 / DIN 5 specified for brass spur gears in instrument applications?

AGMA 13 (≈ DIN 5) is among the highest accuracy grades for machined metal gears. At this accuracy, the transmission error of the gear pair — the deviation of the driven gear's angular position from the theoretically correct position at each instant during meshing — is minimised. In instrument drives, transmission error appears directly as reading error: an altimeter gear pair with DIN 8 accuracy may introduce ±2–3% full-scale error from transmission error alone; a DIN 5 pair reduces this to ±0.3–0.5%. The superior machinability of brass makes AGMA 13 achievable at fine pitch sizes (M0.15–M0.5) more economically in brass than in steel. Contact our team with your accuracy requirement and application.

"We design automotive fuel flow meter drives and specified M0.5 brass spur gears AGMA 13 from Korea Ever-Power. Non-sparking property is a mandatory requirement for fuel-adjacent gear drives — brass was the only material option. TS16949 certification met our automotive OEM incoming qualification standard. 24-hour quotation response confirmed."

Kim Tae-heon  |  Automotive Instrument Drive Engineer, Incheon Automotive Electronics  ·  Q1 2026

"We supply military compass mechanisms and use M0.2 brass spur gears from Korea Ever-Power. Non-magnetic confirmation (Feritscope measurement) is provided with each delivery. AGMA 13 accuracy grade confirmed at our incoming CMM check. Vacuum tray packaging prevents tarnishing during the 6-week transit from China to our European warehouse."

Lee Dong-won  |  Military Instrument Component Engineer, Gyeonggi Defence Systems  ·  Q4 2025

"We design mechanical clock and precision instrument gear trains and source M0.15–M0.3 brass spur gears from Korea Ever-Power. At M0.15, the tooth height is only 0.34 mm — Korea Ever-Power machines these on their finest-pitch CNC gear cutters and achieves DIN 5 accuracy consistently. The brass surface quality after machining is excellent — no burrs, no tool marks on the tooth flanks."

Park Min-seo  |  Precision Clock Mechanism Designer, Seoul Precision Instruments  ·  Q2 2026

"We used Korea Ever-Power's ODM service for a new dental instrument drive — we had the torque and speed specification but needed a complete gear design. Their design team proposed M0.4 brass spur gears at AGMA 13, produced the drawing for our approval, and delivered samples from the European agent storage within 2 weeks. The sample gears fitted our prototype without modification."

Choi Hyeon-ji  |  Dental Instrument Mechanism Engineer, Busan Medical Device Co.  ·  Q3 2025

"We import M0.5 and M0.8 brass spur gears for distribution to aircraft instrument repair shops. Korea Ever-Power's AGMA 13 gears are accepted at incoming inspection by our aircraft instrument OEM customers without supplemental accuracy verification. DHL delivery; vacuum-packed; each piece individually bagged with the module and tooth count printed on the bag label."

Yoon Hyeong-jun  |  Aircraft Instrument Parts Import Manager, Daejeon Aerospace Components  ·  Q1 2025