Shaoyang Victor Hydraulic Co., Ltd.
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Split-Type Bronze Guide Bush Conservancy Hydraulic Cylinder with C5-M Corrosion Protection
Features:
1. Integrated mechanical locking device (dual hydraulic lock + ratchet) with ±0.5° accuracy per DIN 15434.
2. Cylinder bore honing (Ra≤0.2μm) with cylindricity ≤IT7 grade extends seal service life.
3. Smart diagnostic interface (CANopen/Profinet) monitors pressure/temperature/displacement at 1kHz sampling rate.
4. Split-type bronze guide bush (CuSn12) with friction coefficient ≤0.08 and PV value ≥30MPa·m/s.
5. Anti-rotation mechanism (dual keyway + cross slider per ISO 3019) withstands ≥5000N·m torque.
6. Modular design (ISO 6020/6022 mounting) compatible with various gate types (flap/radial/miter).
7. Emergency manual pump port (G3/8" BSPP) allows ≥3 full strokes during power loss.
8. Built-in oil temperature control (PTC heater + air cooling) maintains 40-60mm²/s viscosity@50℃.
9. C5-M corrosion protection (ISO 12944) passes ≥2000h salt spray test for coastal projects.
10. Asymmetric circuit design (differential rapid return) achieves ≥0.5m/s no-load speed with ±2% accuracy.
Technical data:
| Parameter Category | Technical Parameter | Technical Specification |
| Structural Parameters | Cylinder Bore (D) | Standard range Φ200-1400mm, customizable up to Φ2500mm+ with tolerance grade IT7 |
| Piston Rod Diameter (d) | Designed based on load calculation, standard range Φ80-500mm, surface hardness ≥HRC55, straightness ≤0.05mm/m | |
| Stroke Length (L) | Maximum stroke 24m, segmented cylinder splicing error ≤0.1mm/m | |
| Performance Parameters | Rated Working Pressure | Standard grades: 16/25/31.5/42/45MPa, test pressure = 1.25-1.5×rated pressure (≥16MPa: 1.25×) |
| Synchronization Accuracy | Multi-cylinder synchronization error ≤0.5% (closed-loop control), displacement resolution ±0.1mm | |
| Minimum Stable Speed | No creeping under full load, speed range 0.01-0.5m/s (with servo regulation) | |
| Material Parameters | Cylinder Material | High-strength alloy steel (e.g., 42CrMo/SAE4140), tensile strength ≥800MPa, yield strength ≥650MPa |
| Piston Rod Material | Surface high-frequency quenched or HVOF-coated, base material 42CrMo/30CrNiMo, hardness HRC55-65 | |
| Sealing & Buffering | Main Sealing System | V-type composite seals + dust wipers + guide bands, leakage rate ≤0.1mL/h (42MPa condition) |
| Buffering Device | Adjustable multi-stage buffer (mechanical/hydraulic hybrid), impact attenuation rate ≥85% | |
| Environmental Adaptability | Corrosion Resistance | Passes 3000-hour neutral salt spray test, applicable to seawater depth of 300m (special coating version) |
| Temperature Range | Operating temperature -40℃~+120℃, cold-start heating power ≥500W, high-temperature heat dissipation area ≥2.5m²/MPa | |
| Installation & Maintenance | Mounting Types | Flange type (MF3/MF4), eye type (MP3/MP5), trunnion type (MT4), etc. (8 standard interfaces) |
| Maintenance Interval | ≥5-year maintenance-free under normal conditions (IP68 protection), seal replacement time ≤30min (modular design) |
Specifications:
| Cylinder Type | Mill type, Head Bolted, Base Welded |
| Bore Diameter | Up to 2500mm |
| Rod Diameter | Up to 600mm |
| Stroke Length | Up to 24,000mm |
| Piston Rod Material | AISI 1045, AISI 4140, AISI 4340, 20MnV6 |
| Rod Surface Treatment | Hard chrome plated, Chrome/Nickel plated, Ceramic coated |
| Tube Material | Carbon steel AISI1045 or ST52.3, Alloy steel AISI4140, Stainless steel 2Cr13 or 1Cr17Ni2 |
| Tube Surface Painting | Colors according to RAL and thickness according to customer needs |
| Mounting Type | Clevis, Cross tube, Flange, Trunnion, Tang, Thread |
| Design Pressure | Up to 40Mpa |
| Seal Kits Type | PARKER, MERKEL, HALLITE, NOK, TRELLEBORG |
| Quality Assurance | 1 year |
| Certificate | SGS, BV, ABS ,GL, DNV etc. |
| Application | Heavy industry, steel mill, Hydraulic press, etc. |
Applications:
Competitive Advantage:
1. Dual-pressure sensors (±0.1%) and mechanical relief valves create triple protection. Burst pressure ≥2.5×rated pressure (45MPa) meets ASME B30.1. Embedded AE sensors (≤0.5mV) detect micro-crack propagation.
2. Conservancy hydraulic cylinder Differential circuits with variable pumps reduce 30% energy at ≥1.2m/s return speed. Smart algorithms adjust flow (±1.5L/min), saving ≥12,000kWh annually.
3. Hydropower hydraulic cylinder Accumulator-assisted drives achieve ≤500ms emergency response, complying with ASME QME-1. Servo valves with ≥200Hz frequency enable 200mm stroke in 0.5s.
4. Conservancy hydraulic cylinder Sectional barrel design allows ROV-assisted seal replacement (MTTR≤2hrs). Taper-locked bushings (≤50kN disassembly force) improve 60% maintenance efficiency.
5. Hydropower hydraulic cylinder Venturi flow optimization achieves cavitation number≥0.4, reducing erosion by 70%. Laser-textured liners (Ra≤0.2μm) mitigate bubble collapse shockwaves.
The Analysis For Conservancy Hydraulic Cylinder Common Breakdown:
1. Hydraulic cylinder guide bush uneven wear (>1mm/1000h) under >15% lateral load requires dual-support structure with graphite bronze bush (PV≥3MPa·m/s).
2. Seal groove deformation from >0.3mm interference fit must be limited to 0.1-0.2mm with FEA validation.
3. Hydraulic cylinder cold-start failure at -30℃ (＞4000cSt viscosity) requires -60℃ pour point oil and 2kW/m heating cables.
4. Magnetostrictive sensor drift (±0.5mm) under >100Gs fields needs μ-metal shielding (≥40dB attenuation) and biannual calibration.
5. Bolt preload loss (>20%) causes flange leakage. Hydraulic tensioners (±5% accuracy) with Loctite 648 are required.