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Heavy Duty Bottom Track Rollers with 7-10mm Hardened Layer Depth and Precision Forging for HITACHI EX800 Excavator Undercarriage Parts

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Excavator Undercarriage Parts [47]
Bulldozer Undercarriage Parts [48]
Track Chain Link [74]
Bottom Track Rollers [133]
Track Shoe Assembly [29]
Track Carrier Rollers [61]
Track Drive Sprocket [87]
Front Idler Assembly [73]
Ground Engaging Tools [57]
Track Bolts And Nuts [27]
Heavy Equipment Hydraulic Attachment [26]
Other Excavator And Bulldozer Parts [28]

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Heavy Duty Bottom Track Rollers with 7-10mm Hardened Layer Depth and Precision Forging for HITACHI EX800 Excavator Undercarriage Parts

Quality Heavy Duty Bottom Track Rollers with 7-10mm Hardened Layer Depth and Precision Forging for HITACHI EX800 Excavator Undercarriage Parts for sale

Brand Name : YT

Model Number : EX800

Place of Origin : China(Mainland)

MOQ : 1PCS

Price : Negotiable

Payment Terms : L/C,T/T

Supply Ability : 10000 PCS/Month

Delivery Time : 7-30 Days

Packaging Details : Export Packaging

Material : 40Mn2、40MnB、50Mn

Technique : Forging/Casting

Colour : Yellow or Black or Customer Required

Condition : New

Certification : ISO9001

Shipment : By Air, Ship and Express

Surface Hardness : HRC52-58

Weight : Optional

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HITACHI Excavator Undercarriage Spare Parts Heavy Duty Bottom Track Rollers Replacement For EX800

1. What is a Track Roller?

As a core component of belt conveyors, the roller comes in diverse types and large volumes, serving to support the conveyor belt and bear the weight of transported materials. It accounts for 35% of a belt conveyor’s total cost while contributing to over 70% of the conveyor’s total resistance—making its quality critically important. Rollers are primarily available in two materials: steel and plastic.

For track rollers, the choice of material—40Mn2, 40MnB, or 50Mn—depends on specific operating conditions. These rollers undergo precision forging followed by normalization, prior to full heat treatment. This rigorous process achieves a surface hardness of HRC 52–56, with a hardened layer depth of over 7–10mm (maintaining HRC 45 at the layer core). The result is exceptional durability: the rollers deliver strong impact resistance and superior surface wear resistance at their contact points, even under heavy loads. To adapt to varying climates and temperatures, we integrate high-performance floating seals and a specialized lubrication system. This design enables both track rollers and carrier rollers to operate reliably in harsh working environments or climates, with a temperature range of -45℃ to 120℃, while ensuring the components remain maintenance-free.

2. Track Rollers Excavator Features

Our track rollers undergo specialized quench-tempering processes, which hone their mechanical properties to excellence—delivering high tensile strength, superior resistance to bending and breakage, and enhanced wear resistance. This ensures they maintain peak performance even under the intense stress of heavy-duty operations.
We take immense pride in the quality of our track rollers. By combining advanced heat treatment techniques, empirical expertise honed in mining applications, and premium floating seals and bearings, we craft heavy-duty track rollers that stand out for exceptional durability—engineered to thrive in the harshest working environments.
Our track rollers are built for longevity, thanks to the synergy of precision-engineered components, meticulous heat treatment, and a lifetime sealing system. Their shells, forged from deep-hardening steel, are specifically designed to resist bell mouthing—a common culprit behind premature failure. Every roller is backed by a manufacturer’s warranty, offering added assurance for your equipment’s reliability.

Heavy Duty Bottom Track Rollers with 7-10mm Hardened Layer Depth and Precision Forging for HITACHI EX800 Excavator Undercarriage Parts

3. Track Roller Structure

4. Main Dimensions of Installation

Heavy Duty Bottom Track Rollers with 7-10mm Hardened Layer Depth and Precision Forging for HITACHI EX800 Excavator Undercarriage Parts

MAIN PARAMETERS

Brand	Model	Main Dimensions of Installation
Brand	Model	A	B	E	G	M	L
HITACHI	EX30	108	85	112	172
	EX60-1	145	120	152	248	218	15
	EX60-2/3	145	120	152	248	216	15
	EX60-5	135	112	140	227	197	15
	EX100	160	135	184	285	250	17.5
	EX120	160	135	184	285	250	17.5
	EX150-1	170	140	200	304	267	17
	EX200-1	185	180	220	356	318	18
	EX200-2	185	150	218	330	290	19
	EX200-2B	195	160	218	330	290	19
	EX220-1	195	160	218	360	325.4	17
	EX270-1	215	180	256	410	368	21.5
	EX300-2/3	215	180	256	410	368	21.5
	EX355	215	180	256	410	368	21.5
	EX400-3/5	215	180	256	410	368	23.5
	EX450-5	240	200	284	447	400	23.5
	UH052	170	140	200	304	267	17
	UH07	185	150	220	356	318	18
	UH083	170	140	200	304	267	17

The models above are just for reference, many models we can't list here.we can supply more products as your requirement. Please feel free to send us your inquiry or email if you have any requirements.

5. Production Process

6. Our Advantages

* World-class quality

* Factory sale directly with reasonable price

* 35 years' experience in Excavator & Bulldozer spare parts manufacturing

* Flexible payment terms including T/T, L/C and so on

* Fast delivery within 30 days after contract established

* Professional sales team, quality inspection, and report, maritime logistics guidance

* After-sale services: video technical support,24h online support

7. Hot Sale Products

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