Four Wheels And One Track - Xuzhou Langley Machinery Co., Ltd

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More Than Slewing Bearings

Your Integrated Undercarriage Solutions Vendor

Xuzhou Langley Machinery collaborates with Benxi Huayang Heavy Industry to deliver original-equipment-grade, high-performance undercarriage track solutions for heavy machinery across the globe.

As a trusted global supplier of heavy machinery components, we excel in high-precision slewing bearings. In strategic partnership with Benxi Huayang Heavy Industry, a leading heavy manufacturing enterprise in North China, we have expanded our product portfolio to cover a full range of core undercarriage parts, including track rollers, top rollers, drive sprockets, idlers and complete track assemblies.

We adopt high-tensile wear-resistant alloy steel, multi-stage heat treatment and precision forging processes, with quenching hardness ranging from HRC 50 to 58. All products boast outstanding impact resistance and exceptional wear durability, ideal for severe working environments such as mining and construction projects.

• Full Compatibility

Our parts fit perfectly all mainstream excavators, bulldozers and crawler cranes from Caterpillar, Komatsu, Shantui, Sany, XCMG, Zoomlion and other renowned brands.

• Comprehensive Services

Ample stock is readily available for standard models. We welcome OEM and ODM custom orders based on clients’ drawings and samples, enabling customers to complete one-stop sourcing for both slewing devices and full undercarriage systems.

Core Products

Track Chain & Shoe Assembly

Precision Pitch, Wear-Resistant Pins, High-Strength Linkage.

CNC-machined for micron-level pitch accuracy to ensure perfect sprocket engagement.
Pins and bushings undergo deep carburizing and precision grinding, increasing wear resistance by 30%.
Engineered with heavy-duty reinforced chain links for exceptional tensile strength and anti-breakage performance under relentless workloads.

Crane track plate
Trenching machine track plate
Excavator track plate
Helical drilling rig track plate
Compaction machine track plate

Track Roller

Reinforced Structure, Heavy-Duty Anti-Deformation, Extended Service Life.

Forged from premium alloy steel with an internally reinforced structure and thickened walls, providing superior load-bearing capacity and shock resistance. Effectively prevents shell deformation, cracking, and uneven wear, even in extreme mining and rocky environments.

Crane support wheels
Trenching machine support wheels
Excavator track wheel
Rotary drilling rig wheel
Compaction machine rollers

Idler Wheel

High Impact Resistance, Perfect Tension Guidance, Smooth Operation.

Manufactured using advanced welding or casting with heavy-duty internal ribs to absorb severe ground shocks. Equipped with premium dual-cone floating seals for lifetime maintenance-free operation. Delivers precise track alignment and tensioning, effectively preventing de-tracking and ensuring stable, straight-line travel.

Track crane idler wheel
Trenching machine steering wheel
Excavator steering wheel
Rotary drilling rig guide wheel
Compaction machine rollers

Sprocket Drive Wheel

Precision Cast & Forged, Perfect Tooth Profile Match, Mud-Discharge Design.

Crafted from high-hardenability steel via automated precision casting/forging and induction hardening, ensuring a deep and uniform wear layer. Features specialized mud slots to prevent debris buildup, skipping, and track damage. The optimized tooth profile drastically reduces friction loss and operational noise.

Track-mounted crane drive wheels
Trenching machine drive wheels
Excavator drive wheels
Rotary drilling rig drive wheel
Compactor sprocket-driven wheel

Carrier Roller

Lifetime Lubrication, Mud & Slurry Proof, High-Efficiency Top Support.

Utilizes OEM-grade floating seals and wear-resistant dual-lip seals to achieve zero-leakage oil retention, 100% blocking external mud, water, and debris. Even during prolonged submersion in muddy or corrosive conditions, the internal bearings rotate effortlessly, providing rigid support to prevent upper track sag.

Track crane support wheel
Scraper conveyor wheel
Excavator drag chain wheel
Rotary drilling rig drag chain wheel
Compactor conveyor chain wheel

Advantages

Superior Materials & Craftsmanship

We select premium high-strength alloy steel, and adopt advanced medium-frequency quenching and full-process precision forging techniques to produce robust parts with great toughness and fracture resistance.
Consistent Hardness & Deep Hardened Layer

After multi-stage heat treatment, the surface hardness is steadily maintained at HRC 50-58 with an extra-deep effective hardened layer, boosting wear resistance by over 30%.
Dependable Sealing Structure

Equipped with heavy-duty floating seals and wear-resistant double-lip seals, they fully block mud and sand ingress to realize lifelong lubrication and greatly cut down maintenance costs.