CAT320C Swing Motor Assembly for CAT 320C Excavator spare parts

CAT320C Swing Motor Assembly for CAT 320C Excavator spare parts Featured Image
  • CAT320C Swing Motor Assembly for CAT 320C Excavator spare parts
  • CAT320C Swing Motor Assembly for CAT 320C Excavator spare parts
  • CAT320C Swing Motor Assembly for CAT 320C Excavator spare parts
  • CAT320C Swing Motor Assembly for CAT 320C Excavator spare parts

Short Description:

The PC200‑8 swing motor is an integrated swing drive assembly designed for Komatsu 20‑ton PC200‑8 excavator matched with CLSS hydraulic system.

Product Detail

Product Tags

description

The CAT320C swing motor assembly adopts heavy‑duty axial plunger hydraulic structure matched with precision‑ground carburized‑quenched planetary reduction gears. Gear tooth surface gains higher hardness, wear resistance and impact resistance, adapting to frequent forward‑reverse swing impact of 20‑ton earth‑moving equipment. Built‑in spring‑loaded wet multi‑disc brake releases by hydraulic pressure during swing action and locks mechanically after stop, effectively preventing upper‑structure drifting on slope construction sites and improving operation safety. Optimized valve‑plate and piston‑shoe friction pair narrows matching clearance, suppresses internal leakage and pressure decay under long‑time continuous heavy‑load cycles and restores smooth, powerful swing performance consistent with OEM standards. Reinforced composite sealing assemblies resist hydraulic‑oil erosion and high‑temperature aging and reduce external oil‑leakage risk.

product parameters

Product Model: CAT320C Swing Motor Assembly
Product Type: Integrated Swing Drive Motor with Reducer & Wet Parking Brake
Applicable Equipment: CAT 320C 20‑Ton Excavator
Working Performance: Stable Swing Torque, Low‑Jitter Rotation, Reliable Brake Holding, Low Internal & External Leakage, Good Compound‑Action Compatibility
Core Functions: Deliver rotary driving torque for upper frame, realize swing start‑stop and anti‑slip parking for earth‑moving and loading cycles.
Applicable Scenarios: Municipal Earthwork, Trenching, Material Loading‑Unloading, Slope Operation, Long‑Term Refurbished‑Machine Site Work
Matching Parts: Fully compatible with original CAT320C slewing bearing, main control valve and hydraulic pipeline system.
Output Torque: Matched to CAT320C factory specification
Brake Mode: Spring‑Engaged Wet Multi‑Disc Parking Brake, Hydraulic Release
Rotation Direction: Bidirectional Forward & Reverse Swing
Installation Mode: 1:1 OEM mounting hole, spline and oil‑port dimension, direct replacement without modification
Service Life: Heavy‑duty anti‑wear anti‑fatigue construction‑grade structure

advantages

  • 1:1 OEM‑Equivalent Dimension, Lossless Field Swap: Mounting holes, output spline and hydraulic port layout strictly follow CAT320C original drawing standard. No casing machining, pipe cutting or welding required during overhaul, shortening equipment downtime.
  • Carburized‑Quenched Gear Train, Strong Anti‑Impact Performance: Precision‑ground planetary gear set improves surface hardness and fatigue resistance, coping with frequent swing impact of 20‑ton earth‑moving cycles and reducing gear pitting, abnormal noise and premature wear on aged machines.
  • Reliable Wet Multi‑Disc Brake, Prevent Upper‑Structure Drifting: Spring‑powered wet brake maintains stable holding torque after swing stops. Solves common drifting risk of aging CAT320C units on slope sites and improves construction safety.
  • Optimized Friction Pair, Reduce Internal Leakage & Swing Weakness: Improved valve‑plate and shoe matching accuracy suppresses internal leakage and pressure drop under long‑time high‑temperature heavy‑load operation. Restores original swing torque and mitigates slow‑speed and loaded‑swing weakness.
  • Reinforced Sealing System, Lower Oil‑Leakage Failures: High‑temperature‑resistant composite sealing components resist hydraulic‑oil corrosion and temperature‑cycle aging, cutting external‑leakage faults and lowering later‑stage maintenance frequency.
  • Full‑Set Factory Testing, Stable For Refurbished Units: Each CAT320C swing motor assembly completes torque calibration, brake holding and high‑pressure leakage testing. Consistent performance for overhauled CAT320C machines and enhances whole‑machine stability and residual value.

FAQ

  • Q1: Which machine is this swing motor suitable for?
  • A: Exclusively for CAT 320C 20‑ton excavator, complete integrated swing motor assembly with reducer and wet parking brake, not interchangeable with other CAT series models.
  • Q2: What typical faults can CAT320C swing motor solve?
  • A: It repairs aging‑related swing faults: insufficient swing torque, slow slewing speed, swing jitter, brake slipping, upper‑structure drifting on slopes, high‑temperature internal leakage and external oil leakage.
  • Q3: Is casing or pipe modification required for installation?
  • A: No modification needed. 1:1 OEM‑matched mounting hole, spline and oil‑port layout support direct replacement following standard overhaul procedure.
  • Q4: Upper‑structure still drifts after swing‑motor replacement?
  • A: Apart from motor condition, inspect brake pilot pressure, brake relief‑valve setting, slewing‑bearing clearance and wear condition of main‑valve swing spool to eliminate hydraulic‑system and mechanical‑clearance anomalies.
  • Q5: Daily maintenance suggestions for CAT320C swing motor?
  • A: Keep hydraulic‑oil clean and replace filter elements on schedule. Avoid long‑time heavy‑impact frequent swing cycles. Regularly check motor housing for oil leakage and verify brake‑holding performance on slope conditions.

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.

our warehouse

our warehouse

Pack and ship

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