Forged 23MnB Steel Triple Grouser Track Shoe Assembly with 202.5mm Pitch for Caterpillar 336D Excavator

The 336D track shoe assembly is manufactured for Caterpillar 336D and 336E excavators, heavy 36-ton class carriers that are regularly assigned to mining support, mass excavation and aggregate handling. A shoe on this size of machine must absorb continuous impact from rock piles and blasted floors, so the part is built around a forged 23MnB boron steel body with an induction hardened triple grouser face.

This replacement shoe follows the 202.5 mm pitch geometry of the CAT 336 family and is supplied in a wide triple grouser format that spreads the machine operating weight over a large contact footprint. Installation is bolt-on against the standard chain assembly, with no rework required on links, sprockets or final drive alignment.

Main Parameters

The models above are just for reference, we can't list all models here. we can supply more products as your requirements. Please feel free to send us your inquiry.

• We purchase the raw materials from famous steel group, ensures the high quality of our track shoes.
• All the track shoes are subject to through hardening processes with spray quenching technique and tempering processes.
• Strict quality control from raw material, design, technology, manufacturing for the entire process of detection.
• We can produce any requested parts according to your blue print or samples.

• Heavy class forging: The 23MnB boron steel blank is forged in one piece, giving a dense fiber structure that resists cracking when the bucket strikes buried rock.
• 202.5 mm pitch geometry: Hole centers are machined to the CAT 336 pitch standard so the shoe meshes evenly with the chain bushings across the full circumference.
• Triple grouser traction: The three parallel bars deliver positive grip for crowd forces and reduce track slippage when the machine pushes into a bank.
• Deep hardened crown: The grouser crown is induction hardened to resist abrasion from gravel while the softer core absorbs bending loads from uneven terrain.
• Flatness control: Every shoe is straightened and gauged after heat treatment so bolted joints stay tight and do not work loose under vibration.
• Bolt set available: High tensile fasteners matched to the 336 series can be packed together with the shoes for a complete mounting kit.

Dimensions and material values below are reference figures from standard YT production batches. Before ordering, verify the pitch, shoe width and link count of the chain currently fitted to your excavator and confirm the original part number.

* Values are reference; OEM part number confirmation advised before ordering.

1. Incoming steel verification: spectrometer testing checks the 23MnB composition of each incoming bar heat against the mill certificate.
2. Closed die forging: heated billets are pressed in closed dies to shape the shoe body, grouser bars and bolt pads in one forming step.
3. Flash removal and normalizing: excess flash is cut away and the forgings are normalized to homogenize the grain structure.
4. Quench and temper cycle: controlled heat treatment produces the required core hardness with enough toughness for impact service.
5. Precision machining: CNC centers drill the pitch and bolt holes and mill the contact faces to drawing tolerance.
6. Induction hardening: the grouser crowns are hardened and tempered to the specified surface hardness range.
7. Straightening and gauging: each shoe is pressed flat where needed and checked with pitch gauges and hardness testers.
8. Surface preparation: parts are shot cleaned and coated with anti-rust primer for corrosion protection.
9. Palletizing: finished shoes are counted, strapped onto steel pallets and labeled with part number and batch code.

XIAMEN YINTAI MACHINERY CO., LTD., founded in 2011 and selling under the YT brand, is a manufacturer and exporter specializing in undercarriage systems. The plant combines forging capacity, CNC workshops and heat treatment lines under one roof, staffed by a team of 50-100 people, with export business representing about 90-100 percent of annual turnover of USD 10-20 million.

Because forging, machining and hardening happen in-house, dimensional consistency and hardness uniformity are controlled rather than outsourced. The ISO 9001:2015 quality management system covers every stage from raw material release to final inspection, and SGS or third-party verification can be arranged before loading. The YT engineering office also runs OEM/ODM projects, adapting shoes to customer drawings and packaging instructions.

• Mine support and haul road duty: The hardened triple grouser face stands up to abrasive haul road material and coarse reject rock, extending wear life between change-outs.
• Mass excavation contracts: For fleet owners moving large volumes of earth, consistent shoe geometry across all sets keeps track tension even and reduces strain on rollers.
• Mid-life rebuild packages: Combine these shoes with YT chains, rollers and idlers to rebuild a complete 336 class undercarriage in one maintenance window.
• Budget planning for replacement cycles: Scheduled supply agreements lock in stable pricing and delivery slots so plant managers can plan wear part budgets accurately.
• Breakdown response: Commonly ordered widths are held in finished goods stock, allowing fast dispatch of single shoes or partial sets when a machine is down.

The 336D track shoe assembly suits large-scale earthmoving, quarry production digging, dam construction, mine site clearing and heavy foundation work where Caterpillar 336 class excavators operate on abrasive or uneven ground. The wide 900 mm triple grouser pad gives the machine a stable base for lifting and swinging heavy loads, while the hardened bars maintain grip on smooth rock surfaces. Machines working softer ground can be fitted with alternate pad styles from the same YT pitch range after consultation.

Precision Inspection Services

Q1: How can I be sure the shoe matches my CAT 336 track chain?

Measure the pitch between two adjacent bolt holes, the overall width of the old shoe, and the link count of one chain side. Forward these figures together with the machine serial number to YT and our team will confirm the correct part within one working day.

Q2: Do you produce original Caterpillar parts?

No, YT manufactures aftermarket replacement shoes under our own part numbering system. They are engineered to the same mounting philosophy as the originals so that installation is direct and no adapters are required.

Q3: Why is boron steel used for such a heavy shoe?

Boron in the 23MnB grade lifts hardenability so the forging can reach the required hardness after quenching while keeping the carbon level low enough to preserve weldability and impact toughness in cold weather operation.

Q4: What is the minimum order and can we test one shoe first?

One piece is accepted as a trial order. Stock sizes are dispatched in 5-7 days, and sample cost is credited when the customer proceeds with a container order.

Q5: How is the shipment packed for heavy shoes of this size?

Shoes are layered with wooden spacers, strapped to steel export pallets and covered with anti-rust protection. The warranty period is 12-18 months covering material and manufacturing defects under normal duty.

Heavy 336 class shoes are packed in stable pallet loads with spacer strips between layers so the grouser bars do not damage adjacent parts during handling. Each pallet carries a packing list showing quantity, net weight and batch number, and every shipment can be accompanied by material certificates and hardness reports from the YT laboratory. This documentation simplifies customs clearance and gives the buyer a clear quality record for each batch received.