CAT200B Swing Motor for CAT 200B Excavators spare parts

CAT200B Swing Motor for CAT 200B Excavators spare parts Featured Image
  • CAT200B Swing Motor for CAT 200B Excavators spare parts
  • CAT200B Swing Motor for CAT 200B Excavators spare parts
  • CAT200B Swing Motor for CAT 200B Excavators spare parts
  • CAT200B Swing Motor for CAT 200B Excavators spare parts
  • CAT200B Swing Motor for CAT 200B Excavators spare parts

Short Description:

The RMF147 is a newly launched heavy-duty transition-grade pilot gear pump, specially positioned for 18–22 ton medium-large excavators.

Product Detail

Product Tags

description

The CAT200B swing motor adopts heavy‑duty axial plunger motor structure matched with hardened planetary reduction mechanism. All gear teeth are carburized and quenched to enhance surface hardness and wear resistance, adapting to frequent forward‑reverse swing impact loads of old 20‑ton excavators. Built‑in spring‑applied multi‑disc wet brake delivers stable holding torque when the machine stops swinging, effectively preventing upper‑structure drifting on slope construction sites. Optimized valve plate and piston shoe friction pair improve high‑pressure anti‑wear performance, suppressing internal leakage under long‑time continuous swing cycles. Reinforced composite sealing kits resist hydraulic oil erosion and high‑temperature aging, reducing external oil leakage risks. Each finished CAT200B swing motor passes swing torque test, brake holding test, high‑pressure leakage inspection and full‑cycle impact simulation, ensuring stable rotary output and reliable braking performance under heavy‑load earthwork conditions.

product parameters

Product Model: CAT200B Swing Motor
Product Type: Complete Integrated Swing Drive Motor with Reduction & Brake
Applicable Equipment: CAT 200B 20‑Ton Excavator
Structural Features: Axial Plunger Structure, Hardened Planetary Gear Reduction, Wet Multi‑Disc Brake, Integrated Assembly, Original Port Layout
Core Material: Carburized Quenched Alloy Gear, High‑Strength Motor Housing, Anti‑Wear Valve Plate & Shoe Assembly, High‑Temperature Resistant Composite Seal
Working Performance: Stable Swing Torque, Low‑Jitter Rotation, Reliable Brake Holding, Low Internal Leakage, Anti‑Impact Forward‑Reverse Operation
Core Functions: Provide rotary driving torque for excavator upper frame, realize swing start‑stop and position locking, support earthwork, trenching and loading cycles.
Applicable Scenarios: Municipal Earthwork, Trench Excavation, Material Loading‑Unloading, Slope Operation, Long‑Term Site Refurbishment Work
Rated Swing Pressure: 24‑30bar
Output Torque: Matched to original CAT200B factory specification
Brake Mode: Spring‑Engaged Wet Multi‑Disc Parking Brake, Hydraulic Release
Rotation Direction: Bidirectional Forward & Reverse Swing

advantages

  • Full‑Assembly OEM‑Equivalent Dimension, Plug‑and‑Play Swap: Complete housing mounting holes, spline output and hydraulic port positions follow original CAT200B drawing standards. No cutting, welding or housing reworking required during on‑site overhaul, shortening equipment downtime.
  • Hardened Planetary Gear Train, Strong Anti‑Impact Performance: Carburized‑quenched gear set improves surface hardness and fatigue resistance, coping with frequent forward‑reverse swing impact during earth‑loading cycles, reducing gear pitting and early wear risks for aged machines.
  • Reliable Wet Multi‑Disc Brake, Prevent Upper‑Structure Slippage: Spring‑applied wet brake maintains stable holding torque after swing stops. Effectively solves the common fault of upper‑car drifting on slope sites for aging CAT200B excavators, improving operation safety.
  • Optimized Friction Pair, Suppress Internal Leakage & Swing Weakness: Upgraded valve plate and piston‑shoe matching accuracy reduces internal leakage under long‑time high‑pressure operation. Recovers original swing torque, improving the phenomenon of slow rotation and weak slewing under load.
  • Reinforced Sealing System, Less Oil Leakage Trouble: High‑temperature‑resistant composite sealing components adapt to variable‑temperature site environment, mitigating outer oil leakage and pressure decay caused by seal aging on old machines, lowering maintenance frequency.
  • Complete Pre‑Delivery Testing, Stable for Refurbished Machine Usage: Each unit passes swing torque, brake holding and high‑pressure leakage testing. Consistent performance for retrofitted CAT200B machines, improving machine stability and residual value.

FAQ

  • Q1: Which excavator model is this swing motor suitable for?
  • A: Exclusively for CAT 200B 20‑ton excavator. It is a complete integrated swing motor assembly with reducer and parking brake, not interchangeable with other CAT series models.
  • Q2: What typical failures can CAT200B swing motor solve?
  • A: It addresses weak swing torque, slow slewing speed, swing jitter under load, brake slipping, upper‑structure drifting on slopes, internal leakage and external oil leakage caused by aging of original swing unit.
  • Q3: Does installation require modification of housing or piping?
  • A: No modification needed. 1:1 OEM‑matched mounting holes, spline and oil‑port layout support direct replacement. Installers only need to follow standard swing motor overhaul procedure.
  • Q4: Why does the upper frame still drift after motor replacement?
  • A: Check pilot brake release pressure and adjust brake‑related relief pressure. Also inspect slewing bearing clearance and main control valve swing spool condition besides the swing motor itself.
  • Q5: What are daily maintenance points for CAT200B swing motor?
  • A: Keep hydraulic oil clean and replace filter elements on schedule. Avoid long‑time heavy‑impact frequent swing operation. Periodically inspect motor housing for oil leakage and verify brake holding performance on slope condition.

warehouse

We have built four spare parts warehouses in Xuzhou, Jining, Kunshan and Changsha to provide customers from all over the world with a variety of high-quality spare parts. We can basically ship self-provided spare parts within three days after confirming the order. If the spare parts need to be adjusted or processed, they will be shipped within 7-30 days.

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