Customized Al844 Bl866 Forklift Mast Leaf Chain with Anchor Bolts

Product Description

About the Products

I.Introduction of Product:
Heavy-Duty AL844 & BL866 Leaf Chains with Custom End Fittings
Our AL844 (4x4 lacing) and BL866 (6x6 lacing) leaf chains (1" / 25.4mm pitch) are specifically engineered for heavy-duty forklift mast lifting and demanding material handling applications. Complete with precision CNC-machined connecting end fittings, our chain assemblies deliver exceptional tensile strength, fatigue resistance, and flawless OEM interchangeability.

Key Features & Manufacturing Advantages:
• Premium Alloy Steel Plates: Precision-stamped from high-grade 40Mn/20Mn alloy steel, delivering outstanding tensile strength and impact resistance under heavy dynamic loads.
• Optimized Heat Treatment: Multi-stage heat treatment ensures maximum surface wear resistance while maintaining high core toughness to prevent sudden brittle fracture.
• Precision Custom End Connection Blocks: CNC-machined black-oxidized or zinc-plated anchor blocks, clevises, and threaded bolts tailored strictly to your equipment drawings.
• Pre-Stretched & Shot-Peened: Factory pre-loaded to eliminate initial stretch and shot-peened for extended fatigue life in high-frequency lifting cycles.
• Reliable & Secure Fastening: High-precision link pins securely locked with heavy-duty split cotter pins for maximum on-site operational safety.
• 100% Pre-Delivery Inspection: Every finished chain assembly undergoes strict proof load and dimensional verification before export packaging.
Applications & Custom Services:
• Widely Used In: Forklift masts (Toyota, Linde, Hyster, Yale, Heli, Hangcha), straddle carriers, stacker cranes, and automated warehouse hoists.
• Custom Capabilities: Supplied in exact cut-to-length strands, matched tension pairs, or customized end fittings (threaded anchor rods, U-clevis, or custom brackets)
 

II.Parameter of Product:

Part No.	Lacing	Pitch (P)	Pin Diameter (D)	Plate Height (H) (max)	Pin Length Over-all (F)	Plate Thickness (T)	Average Tensile Strength (Lbs.)	Average Weight Per Foot (Lbs./Ft.)
AL844	4 x 4	1	0.312	0.82	1.182	0.125	31680	1.88
BL866	6 x 6	1	0.376	0.95	1.059	0.157	74737	4.516

 

Technical Specifications for AL844 & BL866 Leaf Chains

Parameter	AL844 (Standard Series)	BL866 / LH1666 (Heavy Duty Series)
Standard	ANSI B29.8 / ISO 4347	ANSI B29.8 / ISO 4347 / DIN 8152
Pitch	25.4 mm (1.0 Inch)	25.4 mm (1.0 Inch)
Lacing	4 × 4	6 × 6
Plate Thickness	2.40 mm	3.20 mm (Heavy Duty)
Plate Height ( H max)	20.80 mm	24.10 mm
Pin Diameter ( d2)	7.92 mm	9.53 mm
Pin Length ( L max)	22.60 mm	42.50 mm
Min. Tensile Strength	≥≥ 89.0 kN (20,000 lbs)	≥≥ 222.4 kN (50,000 lbs)
Average Tensile Strength	105.0 kN	260.0 kN
Weight per Meter	~ 2.70 kg/m	~ 6.35 kg/m
Pre-Stretched Load	1/3 Ultimate Tensile Load	1/3 Ultimate Tensile Load

III.Usages:
Mainly used for forklift mast lifting systems
Applied in various lifting platforms and material handling equipment
Suitable for hoisting machinery, warehouse stacking equipment
Widely adopted for industrial lifting devices and cargo lifting machines
Fit for port and workshop heavy-load transmission and lifting equipment


IV.Packages and Shipping:
We provide Carton Box, Wooden Box or Pallet for packaging.

And also can be customized!!!

 We support multiple transportation methods. Whether you are located in North America, South America, Europe, Southeast Asia or Africa, we will arrange shipments to your location efficiently and provide you with the most economical transport service.
 

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Company Profile

 

I.Why Chose us?
(1).Sophisticated production system:
    We are a manufacturer specializing in chains, sprockets, gears and matching products with a well-established production system. Our integrated production workflow includes material processing, precision machining, thermal treatment, surface treatment, assembly and full-range quality testing. Rigorous process management enables us to guarantee stable product quality, support bulk orders and flexible customized solutions for global clients.
 (2).Many partnerships with clients from different countries we have established:
    For years, as a producer of chains and related accessories, we have formed long-term friendly partnerships with clients throughout Asia, Europe, the Americas, Africa and Oceania. We fully acknowledge diverse local requirements and international standards. Based on equality and mutual benefit, we supply customized solutions suited to local operating environments. Our sincere service and dependable products win consistent recognition, helping us develop a mature global cooperation network.



(3).Certification we own:
    We have obtained a variety of professional industry certificates and official domestic certifications related to chain manufacturing. All credentials are available for verification. These certifications sufficiently demonstrate that our production management and product quality comply with relevant industrial standards. They serve as powerful proof of our overall strength, stable supply capacity and consistent product quality, bringing greater procurement confidence to our global partners.



II.Company Introduction:

    Qingdao Star Machine Technology Co.,Ltd. is located in the beautful coastal city-Qingdao.We are a large enterprise groups engaged in researching, production, marketing and technical services, having three large research and production basesand one large marketing center for transmission parts, bearings, chains, sprockets, tractor driving axles and hydraulic steering units. Covering 80,000 square meters, now we have 816 employees including 167 senior professional technicians and a global network of sales and service system. Keeping good partnership with Liaocheng University, Qingdao University, Shandong Agricultural University, Shandong University and Chinese Academy of Agricultural Sciences, we are getting great technical support from industry experts.
    "You provide a request, We'll give you a perfect product". We uphold the business philosophy" integrity, efficiency, cooperation, innovation", quality first, advanced technology, precision production, integrity management, efficient service, to supportour customers with the top quality products and super sophisticated technology.