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Bucket Cylinder for Komatsu Mid-size Excavator PC160LC-7

Bucket Cylinder for Komatsu Mid-size Excavator PC160LC-7

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Bucket Cylinder for Komatsu Mid-size Excavator PC160LC-7

Bucket cylinder for Komatsu mid-size PC160LC-7 excavator — OEM replacement hydraulic cylinder
OEM-specification replacement bucket cylinder for Komatsu Mid-size excavator PC160LC-7 — direct-fit, pressure tested, factory direct supply
Parametro Specifica Notes
Cylinder type Bucket cylinder — double-acting OEM-equivalent replacement for Komatsu PC160LC-7
Applicazione Komatsu Mid-size excavator PC160LC-7 Direct-fit, no modification required
Bore range 100–160 mm Matches OEM bore diameter, H8 honed tolerance
Diametro dell'asta 70–115 mm C45 induction-hardened, hard chrome plated, Ra ≤ 0.2 μm
Stroke range 700–1,100 mm OEM-matched stroke lengths for all Komatsu PC160LC-7 variants
Pressione di esercizio 25–35 MPa 250–350 bar continuous duty rating
Push force range 196–700 kN At maximum working pressure — full bore area
Seal package PU wiper seal + dual-lip NBR rod seal High-frequency wiper seal for construction and quarrying duty
Port thread BSP / JIS — OEM matched Verified against Komatsu PC160LC-7 port standard
Bore finish H8 tolerance, Ra 0.2–0.4 μm honed In-process air gauging on every barrel
Chrome thickness Minimum 25 μm hard chrome Eddy-current measured before seal assembly
Pressure test 100% at 1.5× rated pressure Dynamic test at 60 °C, serialised test certificate per unit
Certifications ISO 9001:2015 · ISO 14001 · ISO 45001 Full material traceability available on request

The Komatsu mid-size PC160LC-7 excavator bucket cylinder is a precision-replacement hydraulic cylinder engineered for direct OEM-fit installation on Komatsu mid-size excavators. This Komatsu bucket cylinder matches the original bore diameter, stroke length, rod specification, port thread, and mounting pin geometry of the Komatsu OEM component, ensuring direct-fit compatibility without modification to the Komatsu PC160LC-7 excavator hydraulic circuit or attachment structure.

Excavator bucket cylinder structure — barrel bore piston rod seals end cap mounting pins
Bucket cylinder internal structure — key components and specifications for Komatsu excavator replacement

Key Technical Facts

  • ✦ Cylinder type: Bucket cylinder for Komatsu mid-size excavator PC160LC-7 — double-acting, OEM-fit replacement
  • ✦ Bore range: 100–160 mm — rod diameter 70–115 mm, working pressure 25–35 MPa
  • ✦ Stroke range: 700–1,100 mm — push force 196–700 kN at max pressure
  • ✦ Seal package: PU wiper seal + dual-lip NBR rod seal — High-frequency wiper seal for construction and quarrying duty
  • ✦ Manufacturing standard: Bore H8 tolerance, rod Ra ≤ 0.2 μm hard chrome, 100% pressure test at 1.5× rated pressure
  • ✦ Supply: 3–7 working days standard catalog sizes · Custom bore-stroke 15–25 working days · ISO 9001:2015

Komatsu Mid-size Excavator Bucket Cylinder — Technical Overview

The Komatsu PC160LC-7 bucket cylinder performs transmit bucket curl and crowd force at high dig cycle frequency as the between the arm tip and bucket linkage actuator in the excavator front attachment. High-frequency cycling — up to 600 cycles per shift in construction and quarrying applications — subjects the Komatsu bucket cylinder to progressive seal wear and rod chrome wear. Monitoring cylinder performance and replacing the unit before internal bypass develops protects the Komatsu hydraulic pump and control valves from contamination by worn seal particles.

Mounting pin diameter tolerance is a critical but often underspecified parameter when sourcing replacement Komatsu bucket cylinders. The Komatsu PC160LC-7 uses specific pin bore diameters at the cap-end and rod-end attachments. A replacement cylinder with oversized pin bores will introduce free play into the Komatsu excavator front attachment, causing fatigue cracking at the pin boss welds within hundreds of operating hours. Our engineers verify pin bore diameter, pin bore centre distance (pin-to-pin length), and lug offset against Komatsu OEM drawings before confirming supply.

For a complete listing of Komatsu excavator bucket cylinders, see our bucket cylinder category page. Technical guidance on identifying which components are failing is in our hydraulic cylinder bypass diagnostic guide.

Komatsu excavator bucket cylinder — typical field application
Komatsu Mid-size excavator bucket cylinder in field operation — transmit bucket curl and crowd force at high dig cycle frequency

OEM Compatibility — Komatsu PC160LC-7: This bucket cylinder is manufactured to match the Komatsu OEM bore, stroke, rod diameter, port thread standard, and mounting pin geometry for the PC160LC-7 series. The replacement Komatsu bucket cylinder installs directly into the Komatsu PC160LC-7 excavator without machining, shimming, or modification. Provide the Komatsu OEM part number when ordering for dimensional verification before despatch. Non-standard Komatsu PC160LC-7 variants — including long-reach and heavy-lift arm configurations — are available as custom-manufactured units within 15 to 25 working days.

Excavator hydraulic cylinder installation positions — boom arm bucket cylinder location
Excavator front attachment cylinder positions — Boom cylinder (upperstructure to boom) · Arm cylinder (boom to arm) · Bucket cylinder (arm tip to bucket linkage)

OEM vs Replacement — Komatsu Excavator Bucket Cylinder Comparison

* Ever-Power Huachang supplies OEM-equivalent dimensional accuracy at aftermarket pricing, with 100% pressure test certification.
Specifica Ever-Power Replacement (this product) Komatsu OEM PC160LC-7
Diametro del foro OEM-matched, H8 honed Komatsu OEM bore specification
Diametro dell'asta OEM-matched, Ra ≤ 0.2 μm hard chrome Komatsu OEM rod specification
Port thread standard BSP / JIS — verified to Komatsu PC160LC-7 Komatsu original port standard
Seal compound PU/NBR standard · FKM on request Komatsu OEM seal type
Mounting pin bores OEM-matched — both ends verified Komatsu original pin geometry
Pressure test 100% dynamic at 1.5× rated — certificated Komatsu OEM production standard
Serial traceability Serial no. + full test and material record OEM documentation standard
Lead time 3–7 days standard catalog Dependent on Komatsu dealer stock

Seal Package — Komatsu PC160LC-7 Bucket Cylinder

Excavator hydraulic cylinder seal kit — PU wiper NBR piston seal components for Komatsu PC160LC-7
Komatsu excavator bucket cylinder seal kit components — PU wiper seal · NBR rod seal · piston seal · O-rings · guide bushing

The Komatsu PC160LC-7 bucket cylinder seal package consists of: a PU (polyurethane) rod wiper seal that excludes abrasive particles from the chrome rod surface on retraction; a primary PU or NBR rod seal that retains hydraulic oil under working pressure; NBR O-rings at the port fittings and end-cap interface; and a polyurethane piston seal that maintains the pressure differential between cap-end and rod-end chambers. Standard seals are rated for mineral hydraulic oil (ISO VG 32–68) at −20 °C to +80 °C continuous operation. For cold-climate Komatsu excavator operation below −20 °C, specify PU/NBR-55 low-temperature compound. For high-temperature or fire-resistant fluid applications, FKM (Viton) seals are available on request. The full seal kit for the Komatsu PC160LC-7 bucket cylinder is available separately — contact us with the Komatsu OEM part number to verify compatibility. See our hydraulic cylinder parts and seal guide for further information on seal selection.

Excavator hydraulic cylinder worn vs new — chrome rod condition showing replacement requirement
When to replace vs reseal — worn Komatsu excavator bucket cylinder (left) showing chrome rod damage vs new OEM-specification replacement (right)
Komatsu PC160LC-7 Bucket Cylinder — Replacement Selection Process:
Step 1 — Identify cylinder position: bucket cylinder (between the arm tip and bucket linkage)
Step 2 — Locate OEM part number: stamped on cylinder barrel or listed in Komatsu PC160LC-7 service manual
Step 3 — If part number not available: measure bore diameter (inside barrel), rod diameter (chrome surface),
stroke length (extended minus retracted), and collapsed length (pin-to-pin fully retracted)
Step 4 — Verify pin diameters at cap end and rod end — note mounting style (pin-eye, clevis, flange)
Step 5 — Submit OEM part number or measurements — receive compatibility verification and price within 24 hours

Komatsu Bucket Cylinder — Specification Reference:
Bore range: 100–160 mm Rod diameter: 70–115 mm
Stroke range: 700–1,100 mm Working pressure: 25–35 MPa
Push force: 196–700 kN at max working pressure

Application Areas — Komatsu Excavator Bucket Cylinder

Applicazione Details
Construction & Foundation Work Trenching, foundation digging, pile driving preparation and utility trench installation with Komatsu PC160LC-7
Estrazione mineraria e cave Open-pit overburden removal, ore excavation and blast site cleanup using Komatsu mid-size excavator
Demolition Structure demolition, concrete breaking and rebar sorting — high-impact duty for Komatsu PC160LC-7 bucket cylinder
Infrastructure Projects Pipeline trenching, road construction and utility installation with Komatsu excavator bucket cylinder

Verify dimensions before ordering: Komatsu excavator bucket cylinders vary in bore, stroke, rod diameter, and pin geometry between model series and production years. Always supply the Komatsu OEM part number or a full dimensional drawing to verify correct supply. Our engineering team verifies compatibility against Komatsu dimensional data before processing every order.

When to replace vs reseal: Reseal the Komatsu PC160LC-7 bucket cylinder when rod seal leakage is present but the chrome rod surface is undamaged (no pitting, scoring, or peeling). Replace the full cylinder if: (1) chrome rod shows scoring deeper than 0.3 mm; (2) bore is out-of-round beyond 0.05 mm; (3) cylinder fails to hold load under pressure (internal bypass); or (4) barrel shows bending or weld failure. A damaged chrome rod will destroy any new seal set within 200 to 500 operating hours.

Installation Guidelines — Komatsu PC160LC-7 Bucket Cylinder

Install the replacement Komatsu PC160LC-7 bucket cylinder by first verifying pin diameter compatibility with the excavator’s existing pin set. Apply molybdenum disulphide grease to pin journals before insertion. Reconnect hydraulic hoses in their original positions — cap-end to cap-end, rod-end to rod-end. Tighten port fittings to the torque specified in the Komatsu PC160LC-7 hydraulic service manual. Start the engine at idle and cycle the bucket cylinder slowly five times to bleed trapped air. Inspect for external leakage at the rod seal and all port connections before returning the Komatsu excavator to productive work.

For pre-replacement diagnostics on the Komatsu PC160LC-7, refer to our cylinder bypass diagnostic guide. Review our manufacturing quality standards for full details of our production and testing process.

Manufacturing Capability: Ever-Power Huachang

Ever-Power Huachang hydraulic cylinder manufacturing facility — Komatsu excavator cylinder production
Ever-Power Huachang — hydraulic cylinder manufacturing facility, Hangzhou, China · ISO 9001:2015 · ISO 14001 · ISO 45001 · 100% pressure tested

Ever-Power Huachang was established in 1978 and has manufactured hydraulic cylinders continuously for 46 years. Our Komatsu excavator bucket cylinder program began with the introduction of Komatsu machines to the Chinese market and has expanded to cover every major Komatsu excavator model in production globally. We maintain direct relationships with Komatsu parts distributors and technical documentation sources, allowing us to cross-reference OEM part numbers and dimensional drawings for both current production and discontinued Komatsu PC160LC-7 variants.

Learn more about our manufacturing facility and engineering team on our company capability page.

Frequently Asked Questions: Komatsu PC160LC-7 Bucket Cylinder

How do I identify the correct bucket cylinder for my Komatsu PC160LC-7?
The most reliable method is to locate the OEM part number stamped on the cylinder barrel or listed in the Komatsu PC160LC-7 service manual parts list. If the number is worn or unavailable, measure: (1) bore diameter — inside the barrel after cleaning; (2) rod diameter — outside diameter of the chrome surface; (3) stroke — fully extended length minus fully retracted length; (4) collapsed length — pin-to-pin or mounting-face-to-mounting-face fully retracted. Note pin diameters at both mounting ends. Supply these four dimensions and we will identify the correct Komatsu bucket cylinder from our drawing database within 24 hours.
What is the difference between OEM and aftermarket Komatsu PC160LC-7 bucket cylinders?
An OEM Komatsu bucket cylinder is manufactured by Komatsu or its designated OEM supplier and supplied through the Komatsu dealer network. An aftermarket replacement — such as our Ever-Power Huachang unit — is manufactured by an independent producer to the same dimensional specification. The key performance factors — bore tolerance, rod chrome finish Ra ≤ 0.2 μm, seal compound selection, and pressure test standard — are the same for both. The primary practical difference is price and lead time: aftermarket Komatsu bucket cylinders are typically 30 to 50% lower cost and available with shorter lead times than Komatsu dealer parts.
What seal material should I specify for my Komatsu PC160LC-7 bucket cylinder?
Standard supply includes PU (polyurethane) rod wiper seals and NBR (nitrile) piston seals, rated for mineral hydraulic oil (ISO VG 46) at −20 °C to +80 °C. For Komatsu excavator operation in cold climates below −20 °C, specify PU/NBR-55 low-temperature compound. For high-ambient-temperature environments (steel plants, foundries, hot-climate mining) above +45 °C, specify FKM (Viton) seals rated to +150 °C continuous. Specify your operating environment when ordering and we will supply the correct seal compound for your Komatsu PC160LC-7 bucket cylinder.
How long does a replacement Komatsu PC160LC-7 bucket cylinder last?
Service life depends primarily on operating environment and maintenance practice. In standard construction applications with regular hydraulic oil changes and correct filtration (10 micron return line filter), a properly specified Komatsu bucket cylinder with Ra ≤ 0.2 μm chrome rod and correctly selected seal compound can achieve 5,000 to 10,000 operating hours before seal replacement is required. In abrasive environments — sandy ground, demolition dust, open-cut mining — wiper seal condition should be checked every 500 hours, as a failed wiper seal will score the chrome rod and dramatically reduce subsequent seal life.
What is the lead time for a Komatsu PC160LC-7 bucket cylinder?
Standard catalog Komatsu bucket cylinders ship within 3 to 7 working days ex-works Hangzhou for the most common Komatsu PC160LC-7 sizes. Less common Komatsu PC160LC-7 variants may require 7 to 15 working days. Custom bore-and-stroke combinations or non-standard port configurations require 15 to 25 working days depending on material availability. Contact us with your Komatsu OEM part number for specific stock status and verified delivery time.
Can I fit this Komatsu PC160LC-7 bucket cylinder without removing the front attachment?
Bucket cylinder replacement on the Komatsu PC160LC-7 typically requires front attachment removal or at minimum controlled lowering to a safe position. The hydraulic circuit must be fully depressurised before disconnecting any fittings — residual accumulator pressure can cause serious injury. Depending on the Komatsu PC160LC-7 variant, the cylinder mounting pins may be accessible from ground level or may require the attachment to be positioned in a specific angle for pin extraction. Refer to the Komatsu PC160LC-7 service manual for the correct bucket cylinder replacement procedure for your specific machine configuration.
Does the Komatsu PC160LC-7 bucket cylinder come with a warranty?
Yes. Ever-Power Huachang Komatsu excavator bucket cylinders are warranted against defects in materials and workmanship. Each cylinder is supplied with a serialised 100% pressure-test certificate — the serial number links to the full production record including material certificates, machining data, and pressure-test results. Warranty claims require the cylinder serial number and a description of the failure mode. For catastrophic failures within the warranty period, we request the failed cylinder be returned for inspection. Contact our after-sales team with the serial number for warranty assessment.

Komatsu Excavator Cylinder — OEM Replacement Program

Discuss Your Komatsu Excavator Bucket Cylinder Requirement

Our engineering team has detailed Komatsu dimensional data for all PC160LC-7 variants. Provide the Komatsu OEM part number or machine serial number for fastest compatibility verification. We respond within one business day with stock availability and pricing.

✉ Contatto · Capacità di produzione · ISO 9001:2015 · 3–7 day standard lead time · 60+ countries served

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