1. KYB: Original Japanese brand Kayaba, a world-famous hydraulic component manufacturer; the brand code remains unchanged without translation.
2. MAG-18 / MAG-26 / MSG-33 / MAG-170: Exclusive model codes for KYB travel motors. The numbers indicate theoretical displacement, which increases with larger digits.
3. Travel Motor: Professional engineering machinery term, referring to hydraulic travel motor, specially developed to drive tracked equipment.
4. Assemblies (plural form): Complete assembly, an integrated unit combining motor head, planetary reducer and parking brake that can be mounted directly without separate spare parts.
Full Chinese name in English: KYB Hydraulic Travel Motor Assemblies Model MAG-18, MAG-26, MSG-33 & MAG-170
Model Positioning & Compatible Equipment
MAG Series: Integrated axial piston travel motors with built-in reduction gear and wet brake, mainstream units for mini excavators
1. MAG-18
Mini small-displacement model, compatible with 1–2 ton mini excavators, small tracked landscaping machines and compact tracked carriers. Featuring compact size and lightweight design, it is suitable for regular flat-ground travelling operations.
2. MAG-26
The most popular universal model in the market, matching 2–3.5 ton small excavators. It delivers moderate torque with low failure rate and enjoys huge demand for aftermarket replacement.
3. MSG-33
An upgraded improved version of the MAG series with reinforced housing and sealing structure. It fits 3–5 ton small excavators and performs better in muddy ground and light stony construction sites with enhanced impact resistance and high-pressure tolerance.
4. MAG-170
Heavy-duty large-displacement variant for 10–18 ton medium excavators, providing high output torque to cope with climbing and heavy-load digging conditions.
Complete Components Included in the Assembly (Core Definition of Assembly)
This all-in-one assembly requires no extra parts for assembly:
- Main axial piston hydraulic motor parts (cylinder block, pistons, valve plate, slippers and other core hydraulic components)
- Built-in planetary gear reduction mechanism (to reduce rotation speed and amplify torque)
- Multi-disc wet parking brake (locks the machine when stationary to prevent sliding downhill)
- Drive hub, output flange and outer housing
- Full set of oil seals, sealing rings, oil drain nozzles and mounting base
Distinction: A standalone motor only means the hydraulic motor pump head, while an Assembly refers to a finished complete unit ready for installation.
General Application Scenarios
Aftermarket replacement parts for mini excavators, crawler loaders, crawler drill rigs, track dumpers and all types of small tracked engineering machinery.