Flanged Cylinder Sleeves
- Flanged design: Provides a secure fit within the engine block, improving structural integrity and performance.
- Material options: Cast iron, steel, or custom alloys for specific performance needs.
- Size variations: Custom diameters, lengths, and wall thicknesses available.
- Surface finishes: Honed, smooth, or polished finishes tailored to engine specifications.
Technical Specifications
| Item | Description |
| Material | Cast iron, steel, or high-strength alloys (customer-specified) |
| Length | 50mm to 250mm |
| Outer diameter | 50mm to 250mm |
| Inner diameter | Range: 40mm to 200mm, specific sizes available |
| Wall thickness | Typically 3mm to 10mm depending on application |
| Tensile strength | 300-600 MPa |
| Hardness | 50-60 HRC |
| Coating | Optional anti-corrosion coatings (e.g., chrome or ceramic) |
| Surface finish | Honed or smooth finish options |
| Testing standards | Pressure, dimensional, and hardness tests |
| Compliance | Meets ASTM, ISO, and other relevant standards |
Applications
- Automotive engines (used in cars, trucks, and buses)
- Heavy-duty machinery (construction equipment, mining equipment)
- Industrial engines (for power generators, compressors, turbines)
- Marine engines (for boats, ships, and offshore platforms)
- Agricultural machinery (tractors, harvesters, and other diesel-powered equipment)
- Power generation systems (diesel and gas engine applications)
Manufacturing Capabilities
Forging Facilities
- 6300T / 3150T / 2000T free hydraulic presses.
- 5T, 3T, 2T, 1T, 750kg, 560kg electro-hydraulic hammers.
Heating Treatment Facilities
- RTX-9 series trolley furnaces in multiple sizes (5.5–8 m chamber length).
- RJ-9-850KW vertical furnace with 15 m depth.
- RTX-12-350KW high-temperature trolley furnace.
Machining Facilities
- CNC machines (max 32-ton load).
- Heavy-duty lathes and vertical mills (up to 70 tons).
- Gantry milling machines, deep-hole boring machines, grinding and turning centers.
Testing & Quality Control
- Spectrum analysis for chemical composition.
- Ultrasonic, non-destructive, and metallographic testing.
- Mechanical property test machines for yield, tensile, hardness.
Production Process
- Raw Material Selection: Use first-grade ingot steel, inspect chemical composition.
- Forging: Heat to precise temperature, perform open die or die forging.
- Heat Treatment: Quenching, tempering, or normalizing to meet mechanical targets.
- Machining: CNC turning, boring, milling, grinding, and drilling to precision ±0.01 mm.
- Inspection: Each shaft tested via 100% ultrasonic, hardness, and tensile checks.
- Packaging & Delivery: Anti-corrosion coating, safe transport packaging, global logistics support.
Additional Value-added Services
- Quench-and-temper heat treating
- Rough and finish turning
- Ultrasonic and mechanical testing
- Dimensional inspection reports
- Customized design and programming support
Quality Assurance
- Each forging carries a test bar for mechanical testing.
- 100% ultrasonic and visual inspection before shipment.
- Hardness, tensile, and metallographic verification.
- Compliance with ASTM, DIN, GB, and EN standards.
Why Choose Boberry

Integrated Production
Complete forging-to-machining production line ensures precision and fast delivery.

Advanced Equipment
Heavy-duty forging presses and CNC systems handle large, complex mechanical component geometries.

Certified Assurance
Certified production with ISO9001, PED, SGS compliance and global OEM support.
Logistics & Delivery
Lead Time: 15–30 days (urgent) / 30–45 days (normal).
Monthly Capacity: 500–1000 tons.
Packing: Wooden crates, steel frames, or per client request.
Shipment: By Sea (recommended, saves cost for forging parts) / By Air (fast but expensive).
Payment Terms: 30% deposit with balance via B/L copy; or 100% L/C at sight.
Delivery Terms: FOB, CIF, CNF.
Monthly Capacity: 500–1000 tons.
Packing: Wooden crates, steel frames, or per client request.
Shipment: By Sea (recommended, saves cost for forging parts) / By Air (fast but expensive).
Payment Terms: 30% deposit with balance via B/L copy; or 100% L/C at sight.
Delivery Terms: FOB, CIF, CNF.
