About Hangzhou Ever Power
An 18-year Hangzhou sprocket foundry serving OEMs and end-users in 46 countries — engineered-class large sprockets, ANSI/ISO catalogue sprockets and drawing-based custom parts, all under one roof.
42CrMo & 45# Steel, Fully Traceable
100% Dimensional & Hardness Inspection
Direct Factory Pricing, No Middleman
18 Years Focused Only on Sprockets
Our Story
From a Six-Person Machine Shop to a 120,000 m² Sprocket Foundry
We started in 2007 as a six-person job shop turning replacement sprockets for local paper mills. Within four years the sample orders from those mills turned into full drive rebuilds; within eight, our first ocean-freight shipments were leaving for European bulk-handling OEMs. Today the plant covers 120,000 m² and runs its own forging, hobbing, heat-treatment and CNC-finishing lines — the same six-stage flow, just at industrial scale.
We have stayed private, stayed in Hangzhou, and stayed narrowly focused on sprockets and chain drives. The engineers who quote your part are the same ones who sign off on the shop-floor QC report. It is not glamorous, but eighteen years in it turns out to be what buyers actually want.
Our Mission
Take the guesswork out of buying a large sprocket. Every drawing gets an engineer, every part gets a heat-lot number, every shipment gets an inspection report — fewer surprises for the buyer, longer service life on the drive.
Our Vision
Be the sprocket foundry that OEM engineers in North America, Europe, Brazil, Australia and Southeast Asia choose without a second RFQ — because our quotations, drawings and lead times have been reliable long enough that the alternative feels like extra work.
Years of Sprocket Manufacturing
Countries Served
Custom Drawings on File
m² Manufacturing Floor
Company Timeline
Eighteen Years, One Focus
Founded in Hangzhou
Six engineers, one CNC lathe, replacement sprockets for regional paper mills.
First Export Order
Container-load of 42CrMo cement-plant sprockets shipped to a Southeast Asian OEM.
In-house Heat Treatment
Induction hardening line commissioned; case-depth control taken back from sub-contractors.
Engineered-class Line
Split-hub and weld-on hub sprockets added; OD capability extended to 2000 mm.
ISO 9001 Re-certified
Third audit passed with zero major findings; supplier of record for mining OEMs in Chile and Australia.
46 Countries, 3,200+ Drawings
Custom drawing library crosses 3,200 released parts; direct-to-Brazil freight consolidation launched.
What we manufacture
Every Large Sprocket Your Drive Might Ever Need
Roller Chain Sprockets
ANSI B29.1 & ISO 606 single, double and triple strand sprockets from #40 through #240. 45# steel or 42CrMo, induction-hardened teeth 45–55 HRC. Stock hubs A, B, C or made to your bore and keyway.
Engineered Class Sprockets
Heavy engineered-class sprockets for mining, cement mills and bulk conveyors — pitches 4″ and above, OD up to 2000 mm. Split-hub designs, weld-on hubs, taper bore and QD bushing options for field-replaceable service.
Custom Drawing Service
Send a PDF, DWG or STEP file and get a same-day feasibility review from our engineering team. We reverse-engineer worn parts from samples, resize for pitch conversions and redraw to your OEM standards.
Standards We Manufacture To
Global Codes, Traceable Documentation
Every part is manufactured against a published standard or a customer OEM drawing. Our engineers work daily in ANSI, ISO, DIN and JIS conventions and will convert between them on request.
Roller Chain Sprockets
US standard for tooth form, pitch and dimensions on transmission and conveyor sprockets.
Short-Pitch Roller Chain
Metric roller chain and matching sprocket dimensions widely used in Europe.
European Chain & Sprockets
Precision roller chain and matching sprocket profile for European OEM specifications.
Japanese Roller Chain
JIS pitch series for Asian OEM machinery and agricultural equipment.
Heavy Engineered Class
Standard for heavy-duty engineered-class chain and sprockets used in mining and paper.
Quality Management
Certified quality management system; last audit passed with zero major findings.
Tooth Form Class 8
Gear-tooth accuracy benchmark applied on hobbing and finishing operations.
Third-party Inspection
Available on request; we routinely release orders under buyer-appointed inspection.
Global Reach
Sprockets Turning on Six Continents
Regular shipments to 46 countries. Local Incoterms handled from our forwarders in Ningbo and Shanghai — FOB, CIF, CFR or DDP to your door.
North America
- United States
- Canada
- Mexico
Latin America
- Brazil
- Chile
- Peru
- Argentina
- Colombia
Europe
- Germany
- Italy
- France
- United Kingdom
- Spain
- Poland
- Netherlands
Oceania & SE Asia
- Australia
- New Zealand
- Vietnam
- Indonesia
- Thailand
- Malaysia
- Philippines
