Lumber Conveyor Chain

Lumber Conveyor Chain is a heavy-duty roller chain designed for conveying logs, timber, boards, and wood products in sawmills and lumber-handling systems. The 81X configuration uses solid rollers, solid bushings, alloy-steel components, and heat-treated parts for repeated loading and abrasive operating conditions. Standard and OEM configurations are available.

 

 

Parameter	Standard Specification
Chain Type	Lumber Conveyor Roller Chain
Chain No.	81X
Construction	Straight side-plate, roller chain
Pitch	66.27 mm (2.609 in)
Roller Diameter	23.00 mm (0.905 in)
Roller Width	Approx. 27.00 mm (1.062 in)
Width Between Inner Plates	27.00 mm
Pin Diameter	11.10 mm (0.437 in)
Pin Length	49.0 mm
Connecting Pin Length	53.5 mm
Inner Plate Depth	28.50 mm
Plate Thickness	4.00 mm (0.156 in)
Overall Width	Approx. 52.4 mm / 2.06 in, depending on configuration
Bushing Type	Solid bushing
Roller Type	Solid roller
Material	Alloy steel
Surface Treatment	Heat treatment; shot blasting available according to production specification
Minimum Tensile Strength	Approx. 106.7 kN / 24,250 lbf
Average Tensile Strength	Approx. 128.9 kN
Approx. Weight	3.78 kg/m
Typical Chain Length	Supplied in required cut length or assembled strand
Attachment	Plain chain; attachment configurations available

 

 

Solid rollers and bushings provide a robust bearing interface for repeated conveying loads and reduce the vulnerability of thin-wall components in demanding service.
Alloy-steel construction provides the material strength required for heavy timber, board, and log conveying applications.
Controlled heat treatment improves the hardness and wear resistance of pins, bushings, rollers, and other load-bearing components.

 

 

Log Deck & Debarker Infeed: High shock load, heavy impact rating; recommended pin surface hardness 58–62 HRC; high resistance to grit and bark entrapment.
Trim Saw & Edger Lines: High-speed continuous operation; pitch tolerance strict control (+/- 0.05 mm per meter); optimized for low pitch elongation.
Green Chain & Sorting Conveyors: High moisture and organic acid exposure; optional zinc-flake coating or specialized rust-inhibitive oil pre-treatment.
Dry Kiln Transfers: Elevated temperature exposure; high-temperature synthetic pre-lubrication rated up to 180°C.

 

 

Customization Item	Available Options
Chain Dimensions	OEM dimensions based on drawing, sample, or equipment interface
Chain Length	Continuous strand, specified cut length, or assembled loop
Material Grade	Alloy-steel grades selected according to load and operating conditions
Surface Treatment	Heat treatment, shot blasting, and other agreed treatments
Attachment Arrangement	Plain chain, welded attachments, extended pins, and application-specific attachment designs
Attachment Positioning	Fixed or customized pitch intervals according to conveyor layout
Plate Configuration	Standard or reinforced side-plate arrangements
Pin Configuration	Standard or application-specific pin length and end configuration
Roller Configuration	Standard solid roller or specified roller arrangement
Bushing Configuration	Standard solid bushing or drawing-based configuration
Marking	Product identification, batch marking, or customer-specific marking

 

 

Raw Material Inspection - Alloy-steel material is checked against the approved material specification before component production.
Component Forming - Pins and other applicable components are manufactured using controlled forming or cold-forging processes to maintain dimensional consistency.
Machining - Bushings, rollers, pins, and plates are machined to the required dimensional tolerances.
Heat Treatment - Computer-controlled heat-treatment processes are used to establish the required hardness and mechanical properties of critical components.
Shot Blasting - Applicable components are shot blasted to remove surface residues and provide a consistent prepared surface.
Chain Assembly - Inner links, outer links, bushings, rollers, and pins are assembled under controlled production procedures.
Dimensional Inspection - Pitch, roller diameter, pin diameter, plate dimensions, and key assembly dimensions are checked against the approved specification.
Tensile Verification - Production batches can be subjected to tensile-strength verification according to the agreed inspection plan.
Final Inspection - Finished chains are checked for assembly condition, appearance, identification, quantity, and packaging before shipment.

 

 

Corrosion Protection: Deep-dip immersion in heavy-duty rust preventive compound, wrapped in hermetically sealed VCI (Vapor Corrosion Inhibitor) plastic film for offshore transit protection up to 24 months.
Strand Configuration & Tagging: Delivered in standard 10-foot (100-link) strands or continuous customer-specified loop lengths; tagged with length, batch code, and directional arrows for simplified site installation.
Reinforced Ocean Crate Spec: ISPM-15 compliant heat-treated fumigated wooden cases with internal steel band strapping and bottom fork clearance (100 mm) for safe warehouse handling.

 

 

 

 

 

 

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