Products
-
Cutting Equipment Parts
-
General Woodworking Electrical Parts
-
Edgebander Machine Parts
- CNC Series Parts
- General Woodworking Components Parts
-
Other Woodworking Parts
- Woodworking Screws And Bolts
- Woodworking Nuts And Washers
- Woodworking Rivets
- Woodworking Anchors
- Woodworking Lubricants
- Woodworking Grease Guns
- Woodworking Oil Dispensers
- Woodworking Calipers
- Woodworking Laser Alignment Tools
- Woodworking Measuring Tapes
- Woodworking Levels
- Woodworking Protective Gear
- Woodworking Cleaning Supplies
- Woodworking beam weld
- Others Homag Parts
- BIESSE/SCM Parts
- Nanxing Parts
- KMS Parts
- SCM Parts
- KIMS Parts
-
Wrapping Machine Parts
-
Roller Conveyor Parts
-
Small Woodworking Equipment
-
Spare Parts for Biesse Machines
-
Spare Parts for Homag Machines
-
Spare Parts for SCM Machines
-
Laser Head
Featured products
Contact us
Wrapping Machine Chains And Sprockets
- DONGHUA
- Hangzhou, China
- 7 ~15 days
- 30 per month
- B series
- 08B-1-25T
Product Advantages and Features
1.Precision manufacturing with excellent quality
Adopting German CNC five axis machining center, the tooth profile accuracy meets DIN 8197 standard
Introducing high-precision gear hobbing machines from Japan, with machining tolerances controlled within ± 0.005mm
Innovative "triple tempering" heat treatment process, increasing product lifespan by 40%
2.Breakthrough in Material Science Performance
Selected Baosteel special supply alloy steel SCM440, with a tensile strength of 1200MPa
The surface adopts nano composite coating technology, which improves corrosion resistance by 5 times
Tested in extreme environments ranging from -40 ℃ to 150 ℃
3.Intelligent production quality assurance
Fully automated production line equipped with machine vision inspection system
Each product is laser engraved with a unique traceability code
Passed ISO 9001/14001/45001 three system certification
4.Innovation design efficiency improvement
Patent involute tooth profile design (patent number ZL2020XXXXXX. X)
Optimize the chip removal groove structure to reduce friction loss by 15%
Modular combination design increases installation efficiency by 50%
Product Technical Parameters
Basic Parameters | Parameter | Value | Standard |
Chain Type | 08B-1 | ANSI B29.1M | |
Number of Teeth (Z) | 25T | - | |
Pitch (P) | 12.70mm | ISO 606 | |
Roller Diameter | 8.51mm | DIN 8187 | |
Plate Thickness | 1.85mm | GB/T 1243 | |
Key Dimensions | Dimension | Value | Tolerance |
Pitch Diameter | 101.60mm | ±0.05mm | |
Outer Diameter | 108.12mm | ±0.08mm | |
Root Diameter | 93.09mm | ±0.05mm | |
Hub Diameter | 60.00mm | ±0.1mm | |
Overall Width | 14.00mm | ±0.2mm | |
Bore & Keyway Options | Configuration | Standard | Customization |
Standard Bore | 20mm | 12-50mm | |
Keyway Size | 6×6mm | ISO compliant | |
Keyway Type | Flat Key | Spline/Taper |
Product Application Scope
Chain sprockets are suitable for various fields of demand
Our chain sprockets are mainly used as conveying systems and transmission systems in the general industrial field, and can also be applied in the food processing industry, agricultural machinery, engineering machinery, and automation equipment in the field of specialized equipment. They are also excellent in dealing with special environments such as humid/corrosive environments and high temperature environments.
Equipment case: Packaging machinery,Main drive for bag packaging machine.


Product Description
Parameter | Donghua 08B-1-25T | Domestic Generic Brands | Competitive Edge |
Material | 45# Steel (QT+Induction Hardened) | Plain Carbon Steel | 3x wear resistance, 50% longer lifespan |
Precision | ISO 606 (±0.03mm) | GB Basic (±0.1mm) | 98% efficiency, 15dB quieter |
Coating | Black Oxide (+Ni/Dacromet options) | Basic paint | 72h salt spray test (vs 24h) |
Warranty | 2 years (with tech support) | Typically 1 year | Free application analysis |
Price | Mid-range (~¥280) | Economy (~¥180) | Superior cost-performance ratio |
Chain and sprocket products have significant advantages in performance, craftsmanship, and service, outstanding cost-effectiveness, wide applicability in all scenarios, and reinforced durability design. They are not only transmission components, but also the guarantee of your production efficiency!
Company Introduction
Haopai Co., Ltd. was established in 2008 and is a comprehensive service enterprise specializing in machinery and accessories for the home industry. We have a specialized and innovative customer center, component assembly workshop, equipment debugging workshop, processing workshop, and warehousing. Our main business includes sales of mechanical parts, equipment upgrades and renovations, equipment maintenance and relocation, customized non-standard equipment, intelligent production line planning, automation support, machine vision, shared cloud warehouses, etc. We provide customers with professional personalized services. After more than ten years of accumulation and development, our elite service team of nearly 200 people has served over 10000 enterprises nationwide. Over the years, we have accumulated more than 200000 non-standard accessory categories, making us the most comprehensive one-stop procurement platform in the industry. We have the most competitive technical renovation team in China, with a total of over 100000 equipment upgrade and renovation projects. Haopai Co., Ltd. has been committed to the great cause of making global machinery and preferred Chinese parts for many years, and is determined to become the preferred brand for comprehensive services of global machinery and parts.


Deeply Cultivating the Industry for More Than Ten Years, Creating an Intelligent Manufacturing Full Chain System for Woodworking Machinery.
After 16 years of industry accumulation, we have always focused on the research and manufacturing of CNC woodworking machinery. We have established a leading full chain production system and specialized team structure, providing one-stop services from research and development to delivery for global customers. It is currently a one-stop procurement platform with a complete range of categories in the industry.
Specialized and Innovative Customer Center



Haopai has been committed to the business philosophy of quality first, integrity-based, and win-win cooperation. We adhere to the business philosophy of ultimate customer experience and efficient operation, and uphold the service spirit of taking non-standard customization, drilling difficulties, and solving difficulties as our own responsibility. We constantly innovate and aspire to become the preferred brand for comprehensive services of global machinery and accessories. We are committed to making the great cause of global machinery and preferred Chinese accessories contribute to the development of national brands and the strength of Haopai people.




Team Style
Professional team, always on standby
The service team is distributed in pre-sales consulting, order management, technical support, and after-sales service positions, with 7 × 12 hours of online response to ensure that your needs are processed in the first time.






Haopai Intelligent Cloud Warehouse, Escorting You
In Order to Solve the Problems of High Procurement Costs, Low Efficiency, Difficult Management, Slow Logistics, And High Stagnant Inventory of Industrial Materials in Factories, Haopai Shared Cloud Warehouse Emerged in 2020. Greater Efforts Will Be Made to Assist Customers in Achieving Zero Capital Occupation, Spare Parts Inventory, And Improving Their Digital Level.




Machining Workshop




Component Assembly Workshop


New Media Center


The Intelligent Dispatching System Established in 2021 Has Achieved Intelligent Personnel Allocation, Real-Time Control of Technical Personnel's Work Status, Mobile Dispatching, Accurate and Effective Arrangement of Various Tasks, Precise Control of Project Costs, Thus Creating a Fast Response, Efficient, And Professional After-Sales Service Team.




Patent Certificates
Cooperative Partner
We Have Served over 10000 Enterprises Nationwide and Have Accumulated over 200000 Non-standard Accessory Categories over the Years, Covering Major Home Furnishing Brands Across the Country.