Medical Stainless Spur Gear – SS, M0.15-M2.0, AGMA 13

Medical stainless steel spur gears are the highest-precision variant in Korea Ever-Power's spur gear range — precision-machined in stainless steel across module M0.15 to M2.0, in a continuous scale of sub-ranges from the finest pitch (M0.15–M0.2) through instrument and light-industrial sizes (M0.25–M2.0). The spur gear form transmits motion between two parallel shafts — since the tooth surface is parallel to the axis of the mounting shaft, no axial thrust force is generated. This property, combined with the ease of achieving high accuracy in small-module stainless steel gears, makes the spur form the standard choice for medical instrument drives, surgical robot mechanisms, infusion pump gear trains, and diagnostic equipment actuators.

Korea Ever-Power holds ISO 9001:2008 and TS16949 certification and has been manufacturing precision medical stainless spur gears since 2008. The factory is located in Hangzhou, Zhejiang Province — factory visits welcomed, with hotel booking assistance and airport pickup available. Minimum order quantity is 1 set. ODM and OEM service. Vacuum-packed in plastic tray, delivered by DHL and UPS.

No Axial Thrust — Simple Bearing Arrangement

The spur gear tooth surface is parallel to the mounting shaft axis — no axial force component is generated during meshing. In compact medical instrument mechanisms where shaft support is provided by miniature ceramic or SS bearings, the elimination of axial thrust directly reduces bearing loading and mechanism complexity, allowing smaller, lighter bearing selection without thrust capacity requirements.

High Precision — AGMA 13 / DIN 5

Medical instrument drives require low transmission error — deviation of the output angle from the theoretically correct angle introduces reading or positioning error that directly affects the medical device's functional accuracy. AGMA 13 (≈ DIN 5) stainless spur gears minimise this transmission error. High-precision stainless steel spur gears can be manufactured with high precision because the straight tooth profile of the spur gear is simpler to cut accurately than helical or bevel teeth.

Corrosion Resistant in Sterilisation Environments

Stainless steel (particularly SS316L with its molybdenum content) resists pitting corrosion in chloride-containing sterilisation agents (chlorine-based disinfectants, saline solutions). The gear's corrosion resistance is intrinsic to the base material — unlike coated steel, which loses its protection as the coating wears from the tooth flanks in service, stainless steel maintains dimensional and surface integrity throughout the gear's service life.

Non-Magnetic — MRI and Electromagnetic Compatibility

Austenitic stainless steel grades (SS304, SS316L) are non-magnetic in the annealed state. Medical devices used in or near MRI scanners must use non-magnetic materials in all components — a stainless steel spur gear satisfies this requirement while providing the structural rigidity and surface hardness that plastic gears cannot match at the same size and load.

Vacuum Tray Packaging — Contamination Protection

Vacuum-packed in plastic tray packaging prevents surface contamination, particle deposition, and moisture condensation between production and installation in the medical device assembly line. The vacuum environment also prevents the slight surface tarnish that can form on stainless steel during storage — ensuring the polished tooth flanks arrive in the condition they left the factory.

ISO 9001 / TS16949 Certified

ISO 9001:2008 and TS16949 certification cover the quality management system, process controls, and inspection procedures. Both certificates are accepted as supplier qualification evidence at medical device OEM incoming inspection — eliminating the need for additional supplier auditing in most markets. TS16949 automotive certification provides an additional level of process rigour that exceeds the minimum ISO 9001 requirement.

Surgical Robots

SS316L spur gears M0.5–M1.0 AGMA 13 in surgical robot wrist and elbow joint reduction stages. Non-magnetic for MRI-guided surgical robots. Autoclave sterilisable between procedures. No axial thrust simplifies the compact joint bearing arrangement.

Infusion Pumps

SS304 spur gears M0.25–M0.5 in peristaltic and syringe pump drives. Stainless replaces POM where higher torque capacity is required at the pump gear stage or where sterilisation of the pump head assembly is performed with the gear set in place.

Diagnostic Imaging Equipment

SS304 spur gears M1.0–M2.0 in CT scanner gantry positioning drives, ultrasound transducer sweep mechanisms, and C-arm positioning systems. Non-magnetic stainless avoids MRI field distortion; high precision avoids imaging artefacts from gear positioning error.

Dental Instruments

SS316L spur gears M0.15–M0.3 in dental handpiece reduction stages and dental chair positioning drives. Autoclave sterilisation compatibility at 134°C is mandatory — stainless steel is the only standard gear material that reliably survives the full autoclave cycle without dimensional change or surface degradation.

Rehabilitation and Mobility Devices

SS304 spur gears M1.5–M2.0 in powered wheelchair drives, motorised exoskeleton joints, and hospital bed adjustment mechanisms. Higher module suits the higher torque of mobility device drives; stainless suits the washdown cleaning regime in clinical and home care environments.

Laboratory Automation

SS316L spur gears M0.5–M1.0 DIN 5–6 in liquid handling robot positioning stages, microplate handler drives, and centrifuge speed-change mechanisms. Corrosion resistance in chemical reagent atmospheres; non-magnetic for instruments containing sensitive measurement electronics.

Is Korea Ever-Power a manufacturer or trading company?

Korea Ever-Power is a manufacturer — established in 2008, with a factory at No. 35, Zijing Road, Hangzhou City, Zhejiang Province, China, near Hangzhou Xiaoshan Airport. The facility manufactures medical stainless spur gears directly under ISO 9001:2008 and TS16949 quality management systems. Factory visits are welcome — Korea Ever-Power provides airport pickup and hotel booking assistance for visiting customers.

What is the minimum order quantity?

Since these are mechanical precision components, the minimum order quantity is 1 set. For prototype and development orders where only a single gear set is required for mechanism validation, Korea Ever-Power produces and delivers at MOQ 1 — without requiring minimum batch commitment. This makes the medical stainless spur gear service accessible for new product development programmes where a single sample set is needed before the production tooling decision is made.

How do I confirm the non-magnetic property of stainless steel spur gears?

The non-magnetic property of austenitic stainless steel (SS304, SS316L) is measured by Feritscope — a portable ferrite content measurement instrument. A reading of ≤ 2 Ferite number confirms the non-magnetic condition suitable for MRI-adjacent applications. Korea Ever-Power can provide the Feritscope measurement report for each batch of medical stainless spur gears where the non-magnetic property is specified. Specify "non-magnetic confirmation required — Feritscope measurement report" on the drawing or order, and the report will be included with the delivery documentation.

Can I visit the factory before placing a production order?

Yes — factory visits are welcome at any time. The Korea Ever-Power factory is in Hangzhou, near Hangzhou Xiaoshan Airport. Korea Ever-Power provides airport pickup on arrival and can book a hotel for the duration of the visit. Factory tour covers the CNC gear cutting department, heat treatment facility, quality inspection laboratory (CMM and optical measurement instruments), and finished product storage. Contact Korea Ever-Power with your planned travel dates to arrange the visit schedule.

What SS316L properties make it preferred over SS304 for medical spur gears?

"We develop MRI-guided surgical robots and required SS316L spur gears M0.8 AGMA 13 — non-magnetic confirmed. Korea Ever-Power provided the Feritscope measurement report showing ≤ 1.2 Ferite number on all gears in the batch. Autoclave sterilisation test (134°C, 50 cycles) showed no dimensional change measurable at our CMM. MOQ 1 set allowed prototype validation before production commitment."

Kim Seo-jin  |  Surgical Robot Mechanism Engineer, Incheon Medical Robotics Co.  ·  Q1 2026

"We manufacture dental handpieces and specified SS316L spur gears M0.2 DIN 5 from Korea Ever-Power. At M0.2, tooth height is only 0.45 mm — the stainless machining quality was confirmed at our incoming optical inspection. Gears pass our 200-cycle autoclave sterilisation validation without surface corrosion or gear mesh binding. TS16949 certification accepted at our ISO 13485 supplier audit."

Lee Hyun-min  |  Dental Equipment Component Engineer, Gyeonggi Dental Instrument Co.  ·  Q4 2025

"We visited Korea Ever-Power's factory in Hangzhou — the airport pickup and hotel were arranged as offered. The factory tour confirmed CNC gear cutting capacity for our M0.15 SS gears and the optical CMM measurement capability for AGMA 13 verification. Production order placed during the visit. Vacuum tray packaging maintained the polished tooth surface quality through DHL transit."

Park Ji-ho  |  Medical Instrument Procurement Lead, Seoul Surgical Instruments  ·  Q2 2026

"We supply laboratory automation systems and import SS304 medical stainless spur gears M0.5 DIN 6 from Korea Ever-Power. Corrosion resistance in our reagent atmosphere (traces of HCl and acetic acid) confirmed over 3 years of continuous service. Non-magnetic property prevents interference with our precision balance sensors in the same enclosure."

Choi Su-yeon  |  Laboratory Automation Component Buyer, Busan Scientific Equipment Co.  ·  Q3 2025

"We distribute medical stainless spur gears M0.25–M1.5 in all six module sub-ranges to hospital equipment maintenance departments in South Korea. MOQ 1 set per module and tooth count combination allows us to carry a very broad range without high inventory commitment. Korea Ever-Power's vacuum tray packaging maintains the gear surface quality through our warehouse storage before onward delivery to hospital customers."

Yoon Min-jun  |  Medical Equipment Parts Distribution Manager, Daejeon Medical Components Co.  ·  Q1 2025