Through Hole Cylinder Sleeves
- Materials: nickel alloys, carbon steel, stainless steel, and alloy steel.
- Superior Fatigue Resistance: Dense, uniform grain flow from hot forging.
- Dimensional Precision: Machining accuracy up to ±0.02–0.05 mm after CNC finishing.
- Flexible Sizes: Custom inside diameter, outside diameter, and length based on drawings.
- Sample Support: Prototype production available with MOQ = 1 piece.
Technical Specifications
| Parameter | Specification |
| Product Type | Through Hole Cylinder Sleeves |
| Materials | Nickel alloys/Carbon steel/Alloy steel/Stainless steel |
| Standards | ASTM, DIN, CE, EN, ISO, BS, UL, GS, BV |
| Forging Type | Open forging or die forging |
| Heat Treatment | Q&T / Normalizing / Annealing |
| Machining | Turning, milling, grinding, boring, drilling |
| Surface Finish | Rough-turned, semi-finished, or fully machined |
| Tolerance | ±0.02–0.05 mm (machined) |
| Reports | Hardness / UT / MT / Mechanical / Dimensional |
| Certification | ISO9001, PED, SGS |
Customization & OEM Service
- Customized geometry: inside/outside diameter, wall thickness, length.
- OEM forging services for machinery, mining, energy, crane, and automotive industries.
- Custom heat treatment for strength, hardness, and wear performance.
- Machining flexibility: rough machining or full CNC finishing.
- Prototype and sample support (MOQ = 1 piece).
- Labeling, marking, and packaging customization for OEM orders.
Industries Served
- Automotive & Transportation: cylinder blanks, housings, drivetrain parts.
- Mining & Quarry Equipment: heavy-duty sleeves and housings.
- Construction Machinery: excavator & crane structural cylinders.
- Energy & Power Generation: turbine & generator cylinder parts.
- Oil & Gas Processing: high-strength forged cylinder components.
- Railway Equipment: axle-related cylindrical forgings.
- General Mechanical Manufacturing: universal cylindrical forging blanks.
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.