Surface stationary/mobile and underground crawler-mounted configurations: review capacity, product size, picks, flight chains, shafts and direct-drive spares together.
McLanahan publishes Stationary/Mobile and Crawler-Mounted feeder-breaker configurations rather than one fixed model code system. This page retains ranges directly relevant to picks, liners, flight chains, shafts and drive spares. Before manufacture, check nameplate, serial and project numbers, general arrangement, drawings and used parts.
The catalogue separates surface stationary/mobile and underground crawler-mounted configurations. Capacity and product size are selection ranges, not evidence that chains, breaker rolls or drives interchange across projects.
| Current configuration family | Installation and conveying arrangement | Published key range | Spare-part checks |
|---|---|---|---|
| Stationary / Mobile Feeder-Breakers | Fixed, skid-mounted, towable on unpowered crawlers or powered crawler-mounted; single or twin flight conveyors | Up to 6,000 tph (5,400 mtph); typical one-dimensional product size 150–300 mm | Receives trucks, loaders or dozers; check hopper capacity, chain pitch, trough width, breaker-roll height and drive configuration |
| Crawler-Mounted Feeder-Breakers | Underground crawler-mounted unit advancing with the face and belt line | Up to 1,200 tph (1,080 mtph); typical one-dimensional product size 150–200 mm | Check seam height, receiving method, chains and flights, breaker roll, crawlers, remote controls, fire protection and dust suppression |
The numbers on the diagram correspond one to one with the rows below.
| No. | Component | Location | Applies to |
|---|---|---|---|
| 1 | Main frame | White load-bearing feeder-breaker frame | Feeder-Breaker |
| 2 | Conveyor chain | Black chain links behind the red flights in the OEM Chain Conveyor close-up | Feeder-Breaker |
| 3 | Chain take-up cylinder | Hydraulic cylinder in the lower-left Chain Take-Up image | Feeder-Breaker |
Separate wear parts by actual breaker-roll, deck, hopper-wall, flight and guide positions. Materials and processes support preliminary assessment; original drawings and acceptance requirements govern the final choice.
Breaker Bit / Pick
Replaceable picks on the horizontal breaker roll receive lump impact and compression. Check profile, shank, retaining-ring type, layout, rotation, original projection and roll position.
View the common part page →Bit Block & Retention Parts
Blocks transfer pick loads to the breaker roll; retaining rings allow quick replacement. Check block angle, welds, bore, pick shank and retaining-ring groove together.
View the common part page →
Crushing-Zone Deck Liner
Flights drag material along the steel deck. The crushing-zone deck takes concentrated impact and sliding wear. The manufacturer's design uses replaceable wear plate plug-welded to the base plate.
View the common part page →Hopper, Sidewall & Skirt Liner
Receiving hoppers, walls and skirts take truck or loader impact and extended sliding wear. Segmentation, thickness, countersunk holes, overlap direction and replacement order vary by project.
View the common part page →Solid Alloy Steel Flight Bar
Flights connect the two engineering-class chains and drag material across the deck and breaking zone. Check trough width, flight section, chain spacing, connecting holes, direction and minimum clearance to the breaker roll.
View the common part page →Guide Rail, Wear Strip & Feed Protection
Chain guides, wear strips and receiving-area guards control chain travel and protect the frame. Check left/right position, section, holes, chain clearance and site replaceability.
View the common part page →Engineering chains, sprockets, head and tail shafts, breaker rolls, gear reducers and hydraulic drives require complete installation interfaces, left/right positions and project configurations.
Engineering-Class Roller Chain & Connector
The two side chains and solid flights form the conveyor assembly. Check chain pitch, plate thickness, pins and bushings, tensile rating, connecting links, left/right pairing and total link count.
View the common part page →Head Shaft, Sprocket & Bearing Assembly
The manufacturer recommends stocking a head shaft/bearing assembly. Check shaft, sprocket tooth count, chain pitch, bearings, housings, seals and hydraulic or mechanical drive interfaces.
View the common part page →Tail Shaft, Tail Wheel & Tension Interface
The manufacturer recommends a spare tail shaft assembly. Check shaft construction, tail wheels, bearings, seals, adjustment travel, chain alignment and receiving-end layout.
View the common part page →Breaker Roll Shaft Assembly & Adjustment Shims
Roll height is adjusted together through shims at bearing housings and motor/reducer bases. Check roll shaft, pick layout, bearing housings, shim sets, drive end and target product size.
View the common part page →Right-Angle Reducer & Torque-Limiting Coupling
The breaker roll uses a shaft-mounted right-angle reducer and torque-limiting coupling. The conveyor head shaft may use the same mechanical arrangement. Distinguish breaking and conveying drive ratios, torques and interfaces.
View the common part page →Hydraulic Conveyor Drive, Housing & Seal
A shaft-mounted hydraulic motor and power unit may drive the conveyor head shaft. Identify hydraulic configurations, bearing housings and seals for the specific machine; do not mix them with mechanical-drive assemblies.
View the common part page →No. Check serial and project numbers, trough width, chain pitch, tooth profile, breaker-roll position, head/tail shaft interfaces, drive configuration, drawings and used-part dimensions.
Provide installation type, full nameplate, serial and project numbers, trough width, chain pitch, flight and pick photographs, breaker-roll position, drawings, used-part dimensions, materials and feed conditions. We use these for identification, material assessment, manufacturing coordination, quality control and delivery.
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