Joy 7ls آلات القص, المدعومة السقف الدعامات و الجدار الطويل قطع الغيار| ANRANST

OEM Joy 7LS image showing twin drums, left/right ranging arms, body, haulage and guidance.

OEM Joy longwall image. Shearer, powered supports and AFC operate together, but spares require separate project and assembly checks.

OEM Joy PRS image. Support structure, legs, cylinders, valve blocks and advancing connections are project-specific.

OEM equipment guide

Establish the 7LS Model and Face Project before Identifying Each System

A longwall is an integrated system, not a single generic machine. The project governs 7LS drums, ranging arms, haulage and controls, support height, force and valves, and AFC pans, chains and drives. Check each system before quotation.

6 Currently Published 7LS Models

1.5–6.0 m Cutting Height on Official Regional Pages

890–1,200 kN Published Haulage Force Range

12 Wear-Part and Core Spare Categories

Models and key specifications

Joy 7LS Models and Longwall System Ranges

7LS models and figures come from Komatsu's current Australian regional pages; PRS and AFC data come from current official product pages. Regional supply and project configurations may differ. Use the table for initial identification.

Model / System	Cutting or Working Range	Weight / Support / Capacity	Haulage / Width / Pan Length	Cutting Power / Project Basis
7LS1D	1.5–3.8 m	55 t (without drums)	890 kN	2 × 480 or 610 kW
7LS2A	1.6–4.0 m	65 t (without drums)	890 kN	2 × 480 or 610 kW
7LS2B	1.6–4.5 m	70 t (without drums)	890 kN	2 × 480 or 610 kW
7LS3A	2.0–4.7 m	65 t (without drums)	890 kN	2 × 480 or 610 kW
7LS5B	2.0–5.0 m	85 t (without drums)	980 kN	2 × 610, 750 or 860 kW
7LS6	2.1–6.0 m	100 t (without drums)	1,200 kN	2 × 750 or 860 kW
Joy PRS Powered Roof Supports	0.8–7.8 m	Support force up to 1,814 t	Width 1.5 / 1.7 / 2.0 m and above	Engineered for the face project
Joy AFC Face Conveyor	Length up to 450 m	Capacity up to 6,000 t/h	Pans 1,503 / 1,756 / 2,050 mm	Confirm on the AFC page

Even the same 7LS model may differ in drums, ranging arms, haulage, controls, electrical specification and face interfaces. PRS and AFC are project-specific. Before manufacture, check full model, serial and project numbers, assembly reference, drawing and revision, and used-part dimensions.

Wear parts

Drum Cutting, Guide Shoes, AFC Pans and Support Wear Areas

Official Komatsu / Joy equipment and component images are preferred. Material candidates follow position, impact, abrasion, welding, fatigue and failure mode; they are not claimed as fixed OEM grades.

Drum Picks, Carbide Tips and Holders

Drum Picks, Carbide Tips & Tool Holders

Picks, tips and holders cut coal and partings, governing cutting path and loading. Check 7LS model, drum diameter/width, left/right drum, rotation, holder angle, shank diameter, nozzle layout and parting strength.

Material assessment: Assess tungsten carbide for tips and strong, tough alloy steel for bodies and holders. Select grain size, brazing, heat treatment and tip support together for impact, abrasion and temperature rise.

Tungsten Carbide High-Strength, Tough Alloy Steel

View the Cutting Pick Page →

Drum Bodies, End Plates and Wear Protection

Cutting Drums, End Plates & Wear Protection

Bodies, end plates, helical vanes, loading plates and local wear layers form the cutting/loading assembly. Check diameter, cutting depth, vane direction, flange, balance, spray passages and actual wear profile.

Material assessment: Follow the original high-strength welded design for drum and vanes. Assess wear plate and controlled hardfacing in high-wear zones. Repairs must control holder location, weld distortion and balance.

Quenched-and-Tempered Wear Plate Hardfacing and Dimensional Restoration

View Drum قطع الغيار المستهلكة →

Drum Cowl, Loading Cowl and Coal-Guiding قطع الغيار المستهلكة

Cowl, Loading Shield & Coal-Flow قطع الغيار المستهلكة

Cowls control coal flow and protect behind the drum. Edges, pivots and guide surfaces wear under impact. Check side, drum size, swing mechanism, pivot bores, swept envelope and AFC clearance.

Material assessment: Verify the high-strength welded body; assess wear plate, local composite plate or replaceable strips for wear faces. Added thickness must not alter the movement envelope.

Quenched-and-Tempered Wear Plate Bimetallic Wear Solutions

View Wear Plates and Liners →

Guide Shoes, Captive Shoes and Wear Inserts

Guide Shoes, Trapping Shoes & Wear Inserts

As the shearer travels along the AFC, shoes and inserts carry machine weight, haulage and side loads under coal-dust abrasion. Check 7LS model, side, pan rail profile, contact surfaces, fixing and wear limits.

Material assessment: Verify shoe bodies as tough alloy steel or the original cast/welded structure. Assess wear-alloy steel, hardfacing or replaceable blocks for inserts, and check running clearance.

High-Strength, Tough Alloy Steel Wear Surface Restoration

View Heavy-Duty Travel and Guidance Parts →

AFC Pans, Side Sections and Wear Strips

AFC Linepans, Side المقاطع، المواد، الأعطال & Wear Strips

The shearer track also forms the face conveyor. Pan floors, sides, guide rails and wear strips must match the scraper chain, pan width, chain spacing and face length. Continue verification on the dedicated AFC page.

Material assessment: Assess wear plate, composite plate or controlled hardfacing for floors and strips. Sides and rails must also meet welding, straightness, connection and guidance-accuracy requirements.

Quenched-and-Tempered Wear Plate Composite Wear Plate

View Conveyor Pan قطع الغيار المستهلكة →

Support Canopies, Bases and Sliding Wear Surfaces

PRS Canopy, Base & Sliding Wear Surfaces

Canopies, shields, bases, advancing connections and side shields form the support. Base sliding faces, advancing contacts and edge protection can wear. Confirm project drawings, working height, support force and geometry.

Material assessment: Follow the original high-strength welded steel and welding procedure. Assess wear plate or replaceable strips locally without changing support geometry or structural certification requirements.

Quenched-and-Tempered Wear Plate High-Strength Structural and Pin Materials

View Structural Wear Plates →

Spare parts

Ranging Arms, Haulage, Cutting Motors, Controls, Support Hydraulics and AFC Spares

Organize spares by power flow and face system. Shearer, supports and AFC are connected, but a system name cannot replace model, project number and assembly drawings.

Ranging Arms, Cutting Gears and Planetary Stages

Ranging Arms, Cutter Gears & Planetaries

Left/right ranging arms transmit cutting-motor power to drums through housings, parallel-shaft gears, planetary stages, shafts, bearings and seals. Check 7LS, side, arm generation, drum interface, tooth count/module, ratio and lubrication/cooling.

Material assessment: Assess gears, shafts and splines for carburized or quenched-and-tempered alloy steel, tooth accuracy and nondestructive testing. Confirm housing, bearing fits and seals as one drive assembly.

Alloy Steel for Gears, Shafts and Splines علبة التروس Seal Materials

View Gears, Pinions and Shafts →

Haulage Gearboxes, Gears and Drive Wheels

Haulage Case, Traction Gears & Drive Wheels

Haulage transfers motor torque to drive wheels for travel along AFC rails. Check 7LS, haulage class, side, gearing, output interfaces, wheel teeth, bearings, brakes and lubrication.

Material assessment: Assess haulage gears, shafts and wheels in high-strength transmission steel with surface hardening. Verify housings and bearing supports for fits, stiffness, fatigue and contamination sealing.

Heavy-Duty Transmission Alloy Steel Bearing and علبة التروس الموانع

View Heavy-Duty Haulage Assemblies →

Cutting Motors, Output Shafts, المحامل والموانع

Cutter Motors, Output Shafts, Bearings & الموانع

Each 7LS has configuration-specific cutting motors and outputs. Provide motor nameplate, voltage/frequency, power, cooling, shaft end, splines, bearings, seals and arm version. Power alone is insufficient for replacement.

Material assessment: Verify the motor against original electrical and explosion-protection certification. ANRANST focuses on materials, fits and inspection for output shafts, sleeves, bearing housings, mechanical seals and associated drive parts.

Alloy Steel for Shafts and Connections Rotary الموانع and Engineering Materials

View Bearings, Sleeves and Supports →

Control Boxes, Faceboss and Mechanical Interfaces

Controller Case, Faceboss & Mechanical Interfaces

Control boxes integrate electrical, automation, cooling and diagnostic interfaces. Check machine model, box reference, regional electrical specification, explosion protection and schematics. This page covers manufacturable housings, mechanical interfaces, cooling and connections rather than classifying control modules as wear parts.

Material assessment: Check housings and mechanical connections for structural steel, corrosion resistance, protection and dimensions. Electrical modules, software and certified parts require the OEM system or authorized compliant channels.

Mechanical Interface and Connection Materials

Proceed to Electromechanical Assembly Review →

Powered-Support Legs, Cylinders, Valves and الموانع

PRS Legs, Cylinders, Valves & الموانع

Legs, balance and advancing cylinders, valves and seals provide support, advancing and attitude control. Check project number, support force, bore, rod diameter, stroke, interfaces, pressure, valve version and fluid.

Material assessment: Verify rods, barrels, guides and pins for strength, surface treatment and nondestructive testing. Select seals by pressure, temperature, fluid, speed and coal-dust contamination.

Alloy Steel for Cylinders and Pins Hydraulic الموانع and Engineering Materials

View Hydraulic الموانع →

AFC Drives, Sprockets, Couplings and Chains

AFC Drives, Sprockets, Couplings & Chain Sets

AFC drives, sprockets, couplings, chains, flights and tensioners must match face capacity and pan configuration. This card establishes the system link; use the dedicated Joy AFC page for dimensions, materials and parts.

Material assessment: Assess sprockets, chains, flights, gears and shafts for heavy-duty alloy steel, forging/casting, heat treatment and fatigue testing. Confirm couplings and gearboxes by original drive configuration.

Sprockets, Chains and Transmission Alloy Steel

View the Joy AFC المعدات Page →

Are ranging arms and drums interchangeable between 7LS1D, 7LS2A, 7LS5B and other models?

The 7LS family name is insufficient. Check full model, side, arm generation, drum diameter/width, flange, cutting motor, gear ratio, haulage configuration, face interfaces and drawing revision.

Is working height alone enough to quote support parts?

No. Joy PRS is engineered for the face. Also check support force, width, geometry, leg/cylinder dimensions, valve version, advancing connections, fluid, project number and assembly drawing.

How can I continue checking AFC pans, chains and sprockets?

This page establishes the longwall system relationships. Use the Joy AFC page to check parts as a set by face capacity/length, pan size, chain centres and pitch, flights, sprockets, drives and tensioners.

Joy قاطعات 7LS وقطع غيار التعدين طويل الوجه