LS00222 and 168436A1 Swing Reducer Parts: First-Stage Carrier Selection Guide

Excavators repeatedly swing during loading, trenching, and site preparation. When technicians identify damaged gears, pins, or bearings inside a swing reduction gearbox, repair planning must establish whether individual components or a carrier assembly require replacement.

The product information associated with LS00222 and 168436A1 describes a first-stage planetary carrier assembly. Listed application references include Sumitomo SH200, SH210, and SH240, together with Case CX210 and CX240 excavators. Purchasing should focus on gearbox identification, the first-stage installation position, and the actual supply scope.

LS00222 and 168436A1 help locate potential replacement parts, but final matching requires the machine serial number, gearbox identification, and applicable parts catalogue.

Additional references, including LNM0604 and 168437A1, also appear in the product information. Without a documented catalogue relationship, these numbers should not automatically be treated as interchangeable references for one assembly. Check their component descriptions, installation positions, and application ranges separately.

Likewise, a base model name such as SH200 or CX210 does not replace complete model and series information. Where a swing assembly has previously been changed, identify the gearbox currently installed.

The product photographs show a carrier arrangement with four planetary gears. The description also lists needle roller bearings, planetary pins, and thrust washers.

These details provide a starting point for the supply list. Confirm actual quantities, configuration, and assembly condition in the order.

Confirm separately whether the central gear visible in the photographs is included in the quotation. Sun gears, ring gears, seals, and accessories should not be assumed to be supplied simply because they appear in a group photograph.

A first-stage carrier is an internal reduction component. It is not a complete swing gearbox and does not include the hydraulic swing motor.

Matching should cover planetary gear tooth count, module, pressure angle, face width, pin fits, and assembly height. Connecting splines require checks of tooth count, profile, mating diameters, and effective engagement length.

Before installing the carrier, inspect the mating sun gear and ring gear. Compatibility depends on the retained components and the equipment’s repair requirements as well as the replacement assembly.

Photographs support structural identification, but cannot replace dimensional drawings, fit tolerances, or assembly inspection records.

The product information lists 20CrMnTi and 42CrMo alloy steels without clearly assigning each grade to individual components. Confirm material requirements separately for the carrier body, gears, and pins.

The stated heat-treatment figures are HRC 58–62 surface hardness and HRC 33–40 core hardness. These ranges should be linked to specific components and test locations. They do not independently establish the complete assembly’s load capacity or service life.

Core hardness is also distinct from impact toughness. Assessments of impact performance require the corresponding material test evidence.

The description mentions dimensional, tooth-profile, hardness, and dynamic-balance checks. Confirm which inspections are documented and whether the reports identify the supplied part or batch.

An “ISO/DIN Class 6” statement also requires the applicable standard number, edition, and inspection scope before it can serve as an acceptance criterion.

For LS00222 and 168436A1 enquiries, combining machine identification, gearbox details, stage position, supply scope, and technical requirements helps suppliers and repair teams identify configuration differences before assembly.