KYB MAG-26VP-400 Travel Motor / Final Drive
2 month ago
Product details
MAG‑26VP‑400
KYB MAG‑26VP‑400 Travel Motor / Final Drive
Product Positioning: The MAG‑26VP‑400 is an integrated swash‑plate piston travel motor and planetary final drive assembly manufactured by KYB, featuring two‑speed shifting and built‑in parking brake. It is specially designed for track drive of 3.5–4.5 ton mini‑excavators.
1. Model Code Explanation
- MAG: KYB travel motor series
- 26: Frame size, applicable for 3.5–4.5 ton machines
- VP: Version with two‑speed shift + parking brake
- 400: Displacement and torque grade (approx. 40 cm³/r, 4000 N·m class)
- Common suffixes: ‑F / ‑F‑3 (flange and assembly variants)
2. Core Technical Specifications
- Structure: Swash‑plate piston motor + single‑stage planetary reduction (hollow‑shaft rotating housing)
- Displacement: 32–40 cm³/r (two‑speed: low‑speed 24 cc/r / high‑speed 14 cc/r)
- Rated Pressure: 21 MPa (210 bar)
- Max Pressure: 27.5 MPa (275 bar)
- Max Output Torque: 3920 N·m (4.0 kN·m)
- Max Output Speed: 54–55 rpm (low‑speed range)
- Control Mode: Two‑speed shift (control pressure: 2–7 MPa)
- Brake Type: Built‑in spring‑applied parking brake (pressure‑loss activated)
- Reduction Ratio: Approx. 52.7
- Weight: Approx. 48–52 kg
- Mounting Flange: 165 mm outer diameter, 9 × M12 evenly distributed bolts
3. Structural Composition (Integrated Final Drive)
1. Piston Motor: Swash‑plate design with two‑speed displacement switching (14/24 cc/r)
2. Planetary Reducer: Single‑stage planetary gear set for high‑torque output
3. Parking Brake: Spring‑loaded multi‑disc brake, hydraulically released for stationary and downhill holding
4. Relief Valve: Built‑in high‑pressure relief for motor protection, factory setting at 27.5 MPa
5. Charge Check Valve: Prevents cavitation and oil starvation
6. Housing & Flange: High‑strength cast iron, directly driving the track sprocket
4. Working Principle
- Travel Drive: High‑pressure oil enters the motor, pistons drive the swash plate to rotate, torque is amplified via planetary reduction to drive the track.
- Two‑Speed Shift: At control pressure of 2–7 MPa, swash‑plate angle changes to switch displacement between low‑speed high‑torque and high‑speed low‑torque mode.
- Parking Brake: Brake is engaged by spring force under no pressure; hydraulic pressure releases the brake for machine travel.
- Overpressure Protection: Built‑in relief valve opens under excessive system pressure to protect the motor from overload damage.
5. Compatible Machine Models
- Doosan: DX35Z, 35Z
- Yuchai: YC35, YC45
- Wacker Neuson: 2702, 2902, 3503, 3703
- Kubota: KX30, KX35
- Interchangeable models: TM04, GM04VA, 702‑C2K etc.
6. Key Features
- ✅ High torque density: 27.5 MPa maximum pressure with 3920 N·m output, optimized for 3.5–4.5 ton mini‑excavators
- ✅ Integrated two‑speed and brake: Compact structure, simplified piping and lower overall cost
- ✅ Rotating housing: Direct sprocket drive, high transmission efficiency and low noise
- ✅ Durable performance: Hardened gears and heavy‑duty bearings for long service life under heavy loads
- ✅ Easy maintenance: Modular design, motor and brake components can be replaced separately
7. Common OEM Part Numbers
- Original KYB: 2608505, 2608774, 2608716
- Aftermarket replacement: MAG‑26VP‑400F, LTM04AHY
8. Common Malfunctions
- Insufficient traction / low torque: Stuck relief valve, incomplete brake release, internal leakage
- Abnormal noise or vibration: Worn gears, damaged bearings, contaminated hydraulic oil
- Oil leakage: Aged shaft seals, cracked housing, loose fittings
- Brake failure: Fatigued brake springs, worn friction discs
MAG-26VP-400: An Original Genuine Travel Motor from KYB
I. Product Features
1. Brand and Quality: KYB is a renowned manufacturer of hydraulic equipment, and its MAG-26VP-400 travel motor is known for its high quality and reliability.
2. Application Areas: This travel motor is suitable for various construction machinery, such as excavators and loaders, providing stable and efficient travel power for these devices.
3. Performance Parameters: The MAG-26VP-400 travel motor boasts specific displacement, pressure, and other performance parameters that meet the requirements of different working conditions. However, specific parameters may vary depending on the product version or application scenario.
II. Product Advantages
1. Original Genuine Product: The KYB original genuine product ensures quality and performance, allowing users to use it with confidence.
2. High Efficiency and Energy Saving: The travel motor adopts advanced design and manufacturing processes, featuring high efficiency and energy-saving characteristics that help reduce equipment operating costs.
3. Durable and Reliable: The KYB travel motor undergoes rigorous quality control and durability testing, enabling it to operate stably for extended periods under harsh working conditions.
III. Purchase and Usage Recommendations
1. Purchase Recommendations:
• When purchasing the MAG-26VP-400 travel motor, users should confirm the product's brand, model, and specifications to ensure compatibility with their equipment.
• Choose to purchase from authorized dealers or suppliers to ensure the authenticity of the product.
2. Usage Recommendations:
• Before use, users should carefully read the product manual to understand the usage methods and precautions.
• Regularly maintain and service the travel motor to extend its service life and maintain stable performance.
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