Company Strength
Company Strength
An integrated manufacturer and exporter of transmission components
Tianjin Kedi Transmission System Co., Ltd. is based in Beichen District, Tianjin. With more than two decades in industrial transmission, we combine engineering, machining, inspection and export trade — specialising in gears and racks, sprockets and chains, timing pulleys and belts, machined parts and assemblies.
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2003Founded in Tianjin
20+Years of transmission experience
450+Standard models in catalog
5Main product lines
Production base
Factory at a glance
| Address | No. 9 Tengwang Road, Shuangkou Medical Equipment Industrial Park, Beichen District, Tianjin, China |
| Plant area | Approx. 8,000 m² |
| Employees | 40–50 employees |
| Technical staff | 15 technical staff |
| Main production equipment | CNC gear hobbing machines, CNC rack grinding machines, gear machining centers, CNC turning centers, CNC milling machines and heat-treatment equipment |
| Export markets | Major countries and regions worldwide |
Plant, staffing and market information is based on company-provided data; equipment listed represents the main production setup, with process details confirmed per order.
Equipment
Main production & inspection equipment
CNC gear hobbing machines
Spur, helical gears, gear shafts, sprockets
Generating hobbing for consistent tooth form — stable batch production of spur, helical gears and sprockets.
CNC gear-rack grinding machine
Ground DIN-grade precision racks
Finish-grinds hardened racks to control cumulative pitch error and flank finish for long, precise travel.
Gear machining centers
Gears and related transmission components
Machines teeth and related features in one setup, cutting re-clamping error — ideal for mixed batches and custom parts.
CNC turning centers
Shafts, hubs, bores, flanges, bushings
Turns shafts, bores, faces and shoulders, holding concentricity and fits as the datum for gear cutting.
CNC milling
Keyways, mounting faces, custom parts
Mills keyways, flats and mounting holes so drawing-based parts assemble correctly.
Coordinate measuring machine (CMM)
Tooth profile and dimensional inspection
Measures key dimensions, tooth profile and GD&T on first articles and finished parts — data behind every shipment.
Manufacturing
Manufacturing processes
Gear cutting
Hobbing, shaping and grinding of spur, helical and bevel gears; rack milling and CNC rack grinding.
Turning & milling
CNC turning of shafts, hubs and bores; milling of keyways, flats and mounting features.
Heat treatment
Quenching & tempering, induction hardening, carburising — to the specified hardness.
Surface finishing
Black oxide, zinc plating, anodising, phosphating and anti-rust oil.
Assembly & matching
Rack–pinion, chain–sprocket and belt–pulley matching; rack sections joined for long travel.
Packing
Anti-rust treatment, protective wrapping and export crates.
Engineering
Engineering & development support
- Drawing review and manufacturability analysis before quotation
- Material and heat-treatment recommendation by load and environment
- Reverse engineering from physical samples
- Matched-part design for racks, pinions, sprockets and pulleys
Technical staff: 15
Quality management
ISO 9001 quality system
Incoming, in-process and final inspection; CMM measurement of critical dimensions; traceable inspection records.
History
Continuous investment in precision
2003
Founded in Tianjin, starting with sprocket production.
2005
Expanded into gear manufacturing.
2010
Integrated range of gears, racks, sprockets, chains and timing pulleys.
2015
Milling and turning equipment added for custom machining.
2021–2024
CMM and CNC gear-rack grinding equipment introduced.
2025
ISO 9001 quality management system certified.
Service process
From requirement to delivery
Requirement
Model numbers, drawings, samples or application details.
Technical review
Dimensions, material and key specifications confirmed.
Quotation
Price, lead time and production plan.
Production & QC
Machining and inspection to the order specification.
Packing & delivery
Export packaging, sea/air/express shipping.
Have a drawing, sample or model number?
Send it to our engineering team — we confirm the specification and reply with a quotation.