YD14-004-007 2-20Ton Hydraulic Pull Back Rams
Professional hydraulic pull back rams designed for multi-scenario applications in automotive, agriculture, and engineering industries.
Product Specifications
Basic Information & Common Parameters
| Parameter |
Description |
| Product Type |
Single-acting hydraulic pull back ram for pulling back, straightening, and disassembling metal parts |
| Working Principle |
Powered by external single-acting hydraulic pump (sold separately); hydraulic-driven ram contraction with external force resetting |
| Structural Features |
High-strength return spring, nitrile rubber seals, detachable ram head connector |
| Packaging & Transportation |
Individual packaging; MOQ 100 units; Quantity per carton varies by model |
| Applicable Scenarios |
Auto body repair, mechanical maintenance, agricultural/engineering equipment straightening |
Key Parameter Comparison by Model
| Parameter |
YD14-004 (2T) |
YD14-005 (5T) |
YD14-006 (10T) |
YD14-007 (20T) |
| Rated Pulling Force |
2 Ton |
5 Ton |
10 Ton |
20 Ton |
| Stroke |
120mm |
130mm |
130mm |
200mm |
| Max. Length |
575mm |
665mm |
715mm |
980mm |
| Weight |
18kg/19kg |
33kg/35kg |
32kg/34kg |
20kg/21kg |
| Main Material |
45# alloy steel ram, 20# seamless steel pipe cylinder |
High-strength alloy steel ram, 45# thick-walled seamless pipe |
Quenched/tempered alloy steel ram, 45# thick-walled pipe |
Special alloy steel ram, 50# thick-walled pipe |
Product Features
Four-Grade Pulling Force for Precise Adaptation
- YD14-004 (2T): Lightweight (18kg) with 120mm stroke for family cars and small equipment
- YD14-005 (5T): 5-ton force for SUVs/light trucks with reinforced handles
- YD14-006 (10T): Upgraded materials for heavy trucks/engineering equipment
- YD14-007 (20T): Special alloy construction for ultra-heavy-duty applications
High-Strength Structure & Leak-Proof Seals
- Rams with tensile strength up to 1100MPa (YD14-007)
- Honed cylinder inner walls (surface roughness ≤0.8μm)
- NBR seals for 2T/5T models, FKM seals for 10T/20T models
- No leakage after 1000+ operations (10T/20T models)
Scenario-Adapted Design
- Compact sizes for narrow spaces (e.g., 575mm length for YD14-004)
- Detachable connectors for multiple operation types
- Lightweight construction for easy mobility
Application Scenarios
Auto Body Repair (YD14-004)
Repairing inner door dents (4cm depth) on Honda Civic without paint damage. Operation time reduced by 50% compared to traditional methods.
Agricultural Machinery Maintenance (YD14-005)
Disassembling stuck gear shafts in tractor gearboxes. Prevents shaft deformation with 100% reuse rate.
Engineering Vehicle Repair (YD14-006)
Straightening loader bucket connecting arms (8mm thickness). On-site repair saves transportation costs.
Large Machinery Disassembly (YD14-007)
Removing cast iron motor housings (100kg weight). Eliminates housing damage common with traditional methods.
Frequently Asked Questions
Q1: Do all models need dedicated hydraulic pumps?
A1: No - ordinary single-acting hydraulic pumps (30-40MPa) can be used universally.
Q2: Why does YD14-007 (20T) only weigh 20kg?
A2: Special alloy material and optimized structure provide both lightweight and high strength. Safety ensured when used within 90% of rated capacity.
Q3: What if the ram won't contract during operation?
A3: Check hydraulic oil level, seals, and return spring. Add oil if low, inspect seals for damage, and verify spring function.
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