Current supplier-catalog coverage centers on a Komatsu PC120 excavator configuration using a 10K17A-type compressor, 24V coil, narrow mounting feet and a single B-section clutch near 145 mm. The head uses a right-side 15-degree O-ring arrangement. This precise combination is the category baseline for importer and repair-network inquiries.
No. Production period, regional specification and previous HVAC repair can change the installed unit. Confirm the old compressor and machine information for every new purchasing program.
A mirrored or differently clocked head may place suction and discharge connections outside the hose path even when the mounting bolts line up. Forcing the hoses can stress fittings, create abrasion points or interfere with nearby structures. The right 15-degree orientation should therefore be treated as an installation dimension, not a cosmetic detail.
Photograph the ports straight on and from above, mark suction and discharge, and include the connector and mounting feet in the same inspection set.
Measure foot width, ear spacing, bolt diameter and offset from the clutch centerline. A wider-foot compressor from another excavator application may share the same general body but will not enter the PC120 bracket correctly. Check body length and rear clearance as well, especially when the replacement uses a revised casting.
No. Voltage prevents an electrical mismatch, but the clutch, mount, port geometry and connector still need their own evidence before installation or wholesale stocking.
State the B-section belt profile, measured pulley diameter, groove count, offset and coil voltage. Ask whether the clutch is supplied complete and whether any dust cover changes clearance. These fields help a supplier separate the requested PC120 assembly from nearby Hitachi or general excavator compressors that may appear similar online.
Keep a close side photograph and a measured clutch record with the approved sample, then compare each incoming lot with that controlled reference.
Request current unit photographs, mounting and port dimensions, voltage and clutch data, declared aftermarket condition, packaging, batch identification, quantity tiers, lead time and claim handling. A cross-reference should be accompanied by the configuration that supports it. If the supplier cannot prove a field, place it on the sample checklist rather than presenting it as confirmed.
Inspect one sample against the removed compressor, test installation and hose routing, and record the acceptance evidence before releasing a broader stock order.
Elecdurauto serves global B2B buyers as an aftermarket supplier. Send the PC120 model context, old label, machine serial information when available, voltage, clutch dimensions, mounting photos, port direction, order quantity and destination. This allows the quotation to focus on a defensible match and realistic supply terms instead of a broad Komatsu brand assumption.
State preferred packing, labeling, sample requirement, annual estimate and delivery terms so technical qualification and the wholesale offer can be evaluated together.