PRODUCT CLASSIFICATION
Six directions of parts for construction equipment
SENNAI products are divided into six categories based on design and purpose. Each section contains only products related to it.
RECOMMENDED PRODUCTS
SENNAI Key Products
BUSHES WITH SPIRAL OIL GROOVES
Bushings with spiral lubrication groove for heavy equipment
Advanced helical oil groove bushing for heavy duty applications provides superior lubrication and increased performance. This high strength bushing is ideal for construction and industrial applications.
Parameters and Application→
PINS AND AXLES
Anti-corrosion pins with a diameter of 50 mm for PC70 excavators, custom made
Our 50mm PC70 excavator pins feature a state-of-the-art anti-corrosion coating and ensure a precise fit. Durable connecting pins protect against rust and stress in the excavator's dynamic connections.
Parameters and Application→
FLANGE BUSHES
Wear Resistant Custom Solid Lubricated Steel Bushings for Industrial Equipment
Precision carbon lubricated bushings made from durable steel, ideal for high speed industrial applications. These special anti-friction bushings reduce downtime and extend service life.
Parameters and Application→
PINS AND AXLES
Wear-resistant hardened steel excavator boom pins
Provide a strong, durable connection with our excavator boom pins made from heat-treated steel. Rely on hardened fingers to keep your boom system stable and effective in challenging terrain.
Parameters and Application→
BUSHINGS WITH DEEP OIL POCKETS
Custom hardened steel wear resistant bushings for construction equipment
Construction-grade hardened steel bushings provide long-lasting performance in harsh field conditions. The bushing surface is treated to improve abrasion resistance and mechanical reliability.
Parameters and Application→
FLANGE BUSHES
High-strength excavator bushings with corrosion protection, outer diameter 35–300 mm
Our anti-corrosion bushing for excavators has an outer diameter ranging from 35mm to 300mm and is made of high strength steel to ensure reliability and durability. Designed for long-term outdoor use, this excavator bushing is rust-resistant.
Parameters and Application→
SUPPORTING PARTS AND BUSHING BASES
Steel bushings 58–62 HRC for mechanical equipment, custom made
High-strength steel 58-62 HRC bushings provide superior wear resistance and cost-effectiveness for a wide range of mechanical systems. Precision machined steel bushings ensure reliable performance.
Parameters and Application→
BUSHES WITH SPIRAL OIL GROOVES
Self-lubricating linear sliding bushings, operating without oil supply
Check out our custom self-lubricating bushings for superior wear resistance. These oil-free linear plain bearings provide reliable performance in a variety of mechanical applications.
Parameters and Application→SENNAI SERVICES
Production, development and customization
SENNAI integrates complete production cycle, custom manufacturing, OEM/ODM services, research and technical services.
Full production cycle
The company independently controls the stages of manufacturing pins and bushings from raw materials to the finished part.
Consider solution→Manufacturing according to requirements
SENNAI manufactures bushings, steel pipes and forgings for various industries.
Consider solution→OEM/ODM
The company provides OEM/ODM services to nearly 100 trading companies annually.
Consider solution→Research and technical services
The enterprise integrates research, production, sales and technical service.
Consider solution→AREAS OF APPLICATION
Application areas for SENNAI products
The products are used in construction machinery, hydraulics, automotive and industrial joints.
CONSTRUCTION EQUIPMENT
Construction equipment
Pins and bushings for excavators, loaders and cranes.
Read more → HYDRAULICSHydraulic equipment
Components for hydraulic systems and cylinders.
Read more → AUTOMOTIVE INDUSTRYAutomotive industry
Wear-resistant bushings for vehicle joints.
Read more → INDUSTRIAL CONNECTIONSPins and bushings for hinges
Pins and bushings for various mechanical connections.
Read more →MATERIALS AND PROCESSING
Parameters specified in product cards
The product cards indicate the steel grades used, the type of heat treatment, lubricants and surface treatment options.
About the company45#, 40Cr, 20CrMo, GCr15
These steels are listed in the descriptions of SENNAI steel bushings.
Hardening and carburizing
Mode and hardness depend on the series and are indicated on the specific product page.
Grooves and holes
The range includes spiral grooves and blind lubrication holes.
Phosphating and MoS₂
The description of the SN-H series indicates phosphating and application of molybdenum disulfide to the inner surface.
Checking at every stage
Quality is controlled at stages from raw materials to the finished part.
PRODUCTION CYCLE
From raw material to finished part
The production scheme combines preparation of the workpiece, mechanical and heat treatment, grinding and control of the finished part.
- 01
Raw materials and procurement
Seamless pipes, steel materials and forgings.
- 02
Machining
Automatic CNC lines, vertical and horizontal machining centers.
- 03
Heat treatment and grinding
Complete set of heat treatment and high-precision grinding equipment.
- 04
Control of the finished part
Physico-chemical analysis, testing equipment and quality control department work.
PRODUCTION
Equipment listed by SENNAI
Precision Pipe Line
Equipment for the production of pipe billets.
Forging production
Forging line and preparation of blanks.
Automatic CNC line
Automated mechanical processing of parts.
Machining centers
Vertical and horizontal machining centers.
Heat treatment
Equipment for a full cycle of heat treatment.
Grinding and testing
High precision grinding and physical and chemical testing equipment.
Controlaccording to part and batch requirements
QUALITY CONTROL
Production control and laboratory facilities
The control base includes a professional laboratory, physical and chemical testing equipment and a separate quality control team.
- Professional quality control team
- Physico-chemical analytical and testing equipment
- Research laboratory and professional testing facility
- Monitoring non-conforming products and recording batch problems
JINAN SENNAI INTELLIGENT TECHNOLOGY
Integrated Enterprise in Jinan
SENNAI is located in Jinan, Shandong Province, and integrates the research, production, sales and technical service of construction machinery parts.
33,000 m²
The area of the enterprise indicated on the main page.
300+ units
Equipment fleet indicated on the main page.
R&D
Own team and cooperation with universities and research institutes.
OEM/ODM
Serving almost 100 trading companies annually.
EXAMPLES OF PROBLEMS
How parameters turn into a production solution
High-strength wear-resistant bucket eye and draw head
Housing and replaceable flange bushing for loaded bucket or drawbar joint.
Open material→High strength wear resistant shims
A set of thicknesses for adjusting the axial clearance on the assembly.
Open material→Bushings and pins for hinge joints
Complete matching of mating pins and bushings.
Open material→SENNAI NEWS
SENNAI news and materials
03/04/2025 · 2 min
Manufacturing products for various industries
SENNAI manufactures bushings, steel pipes and forgings for various industries.
Read material→
03/04/2025 · 2 min
Raw materials for production
SENNAI purchases more than 10,000 tons of seamless steel pipes annually and maintains a wide inventory.
Read material→
03/04/2025 · 2 min
Seamless steel pipes and forging services
SENNAI supplies various types of precision rolled seamless steel pipes and forges the blanks.
Read material→ABOUT SENNAI IN BRIEF
Basic questions about products and production
Brief answers help you select the desired section of the catalog and prepare an application to SENNAI.
Contact SENNAI→Spiral oil bushings, blind bore bushings, flange bushings, pins, bushing support bases and shims.
Yes. SENNAI manufactures bushings, steel pipes and forgings for various industries and provides OEM/ODM services.
The site covers the construction machinery, hydraulics and automotive industries, as well as industrial articulated joints.
Phone: +8617860529771. Email: heidi.han@sennaigroup.com.
CONTACT SENNAI
Send a message about the part you need
Please provide your name, country, email, phone number and product information.
- Drawing, 3D model or part number
- Material, heat treatment and surface
- Quantity and annual requirement
- Control, labeling and packaging