Covers 7LS1D to 7LS6 shearers, engineered Joy powered supports and AFC interfaces. Identify drums, cutting and haulage drives, support hydraulics and face conveying equipment.
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.
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 |
The numbers on the diagram correspond one to one with the rows below.
| No. | Component | Location | Applies to |
|---|---|---|---|
| 1 | Cutting drum | Circular cutting drum at left end | Joy 7LS (OEM complete-machine configuration) |
| 2 | Ranging arm | Ranging arm between left drum and body | Joy 7LS (OEM complete-machine configuration) |
| 3 | Control body | Main control body at centre | Joy 7LS (OEM complete-machine configuration) |
| 4 | Haulage shoe | Haulage shoe beneath left side of body | Joy 7LS (OEM complete-machine configuration) |
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 & 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.
View the Cutting Pick Page →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.
View Drum Wear Parts →
Cowl, Loading Shield & Coal-Flow Wear Parts
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.
View Wear Plates and Liners →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.
View Heavy-Duty Travel and Guidance Parts →
AFC Linepans, Side Profiles & 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.
View Conveyor Pan Wear Parts →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.
View Structural Wear Plates →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, 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.
View Gears, Pinions and Shafts →
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.
View Heavy-Duty Haulage Assemblies →Cutter Motors, Output Shafts, Bearings & Seals
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.
View Bearings, Sleeves and Supports →
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.
Proceed to Electromechanical Assembly Review →
PRS Legs, Cylinders, Valves & Seals
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.
View Hydraulic Seals →
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.
View the Joy AFC Equipment Page →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.
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.
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.
Provide full model and serial number, face project, side, drum and arm configuration, support parameters, AFC pan and chain specifications, drawings or samples, used-part dimensions, material and duty. ANRANST provides technical advice, supplier coordination, quality control and delivery.
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ANRANST provides customers worldwide with engineering assessment, production at certified foundries to the customer technical requirements, quality control and finished-part delivery for custom wear parts and industrial spares, with scope to support other custom industrial parts.
We review mating surfaces and interface dimensions and assess material, heat treatment and manufacturing feasibility.
Material grades and heat-treatment processes are specified order by order, stated in the technical agreement and tracked through production.
Drawing confirmation, material and process control, production tracking, inspection and acceptance coordination.
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