What is the warranty period?

We provide a warranty of 6 months or 12 months depending on the specific agreement.

What materials are used for these parts?

The parts are made from 50mn or 40mn2 steel using forging or casting technology.

Excavator Bulldozer Crawler Undercarriage Parts Track Down Roller Lower Roller Bottom Roller

Name: Excavator Bulldozer Crawler Undercarriage Parts Track Down Roller Lower Roller Bottom Roller
Brand: Quanzhou Zhongkai Machinery Co., Ltd.
SKU: 1967371641

Fujian, ChinaQuanzhou Zhongkai Machinery Co., Ltd.

US$268.00

1-49 Pieces

US$235.00

50-99 Pieces

US$205.00

100-199 Pieces

US$185.00

200+ Pieces

Sample price:US$268.00/piece.Request sample

Product profile

Customization

Available

After-sales Service

Video Support

Warranty

6 Months/12month

Model NO.

All Models Available

Type

Dozer

Application

Excavator

Certification

ISO9001: 2000

Condition

New

Occasion

Contrucction, Earthmoving, Mining

Material

50mn, 40mn2

Technology

Forging/Casting

Hardness Depth

8-12mm

Warranty Time

12 Mouths

MOQ

1 PC

Payment Term

30%T/T in Advance, The Balance Before Shipment

Delivery

25-30 Days

Transportation

by Sea

HRC

55-60

Transport Package

Standard Export Wood Pallet

Specification

Standard

Trademark

Z. K. M

Origin

Quanzhou, China

HS Code

8431490000

Production Capacity

100000 Per Month

Key features

Customizable Colors: Available in black, yellow, or customized colors to meet specific needs.

High Hardness Material: Made of 50mn/40mn2 steel with surface hardness HRC55-60 and depth 8-12mm.

Fast Delivery: 25-30 days for standard orders; 0-7 days if parts are in stock.

Quality Assurance: ISO9001:2000 certified with rigorous quality checks at every production stage.

Flexible MOQ: Minimum Order Quantity is just 1 PC, suitable for sampling or bulk.

Professional Support: Video support available to help ensure correct part selection and fitment.

Secure Packaging: Export standard wood pallets used to ensure safe transport in containers.

Company profile

R&D CapabilitiesIn-stock CapacityFast DeliveryHigh Repeat Buyers Choice

Quanzhou Zhongkai Machinery Co., Ltd.

Fujian, China

Business Type: Manufacturer/Factory, Trading CompanyAverage Response Time: ≤1.22h

AI-Powered supplier vetting

SummaryQuanzhou Zhongkai Machinery Co., Ltd. is identified as both a trading company and manufacturer/factory in Fujian, China. It reports broad customization and ODM capabilities, recent new-product development, one R&D engineer, and 6–10 years of total R&D engineering experience. Production information shows an annual track-roller capacity of 150,000 pieces, with lower stated volumes for track links, idlers, sprockets, and top rollers. The supplier reports OEM service for known brands and exports to multiple global regions. However, quality assurance status, traceability, testing equipment, digitalization, ERP integration, and sustainability capabilities are unknown; testing equipment is stated as zero. No certifications, overseas warehouses, showrooms, agents, or branches are identified. Service strengths include complaint-handling procedures, offline trade-show participation, and stated peak/off-season lead times.

Supplier typeThe supplier is explicitly classified as both a Trading Company and Manufacturer/Factory, operating as Quanzhou Zhongkai Machinery Co., Ltd., a limited company in Fujian, China. This indicates combined trading and manufacturing positioning, but the slices do not quantify the relative share of each activity.

After-Sales capabilityThe supplier has one technology engineer responsible for customer-request confirmation and technical after-sales support, and it reports a clear customer-complaint procedure with follow-up records. It has no overseas warehouse, showroom, agent, or branch, although it has participated in Bauma China; therefore, documented complaint handling is a strength, while overseas service infrastructure is limited.

R&D capabilityThe supplier reports new products during the past year, provides ODM services, and offers broad R&D-related customization. One R&D engineer is listed with responsibilities covering technical support and new-product development, while total R&D engineering experience is stated as 6–10 years; however, no SDK is available and the R&D team size appears limited.

Production capacityStated annual capacities include 150,000 track rollers, 8,000 track links, 8,000 idlers, 5,000 sprockets, and 5,000 top rollers. The supplier also reports 6–10 quality-control staff and lead times of one month in peak season and within 15 working days in off-season, supporting production capability; however, quality-control testing equipment is stated as zero.

Customization capabilityThe supplier explicitly offers customization from samples, customization from designs, full customization, minor customization, and flexible customization. It also reports ODM availability and broad design-service capability, providing direct evidence of strong customization coverage.

Client casesThe supplier reports OEM service for known brands, participation in the Bauma China offline trade show, and exports to South America, Eastern Europe, the Middle East, North America, Southeast Asia, Eastern Asia, Oceania, Western Europe, and Africa. These statements indicate brand and international-market experience, but no named customer cases or independently verifiable project references are supplied.