How are the bearings protected?

The covering on the outside of the sprocket provides excellent resistance to dust and splashed water, protecting the bearings.

Heavy Duty 2311 Series Steel Single Sprocket Roller for Industrial Use

Name: Heavy Duty 2311 Series Steel Single Sprocket Roller for Industrial Use
Brand: HUZHOU EARN DOLLAR INTELLIGENT EQUIPMENT CO., LTD.
SKU: 881534555

Zhejiang, ChinaHUZHOU EARN DOLLAR INTELLIGENT EQUIPMENT CO., LTD.

US$1.00-100.00

50 Pieces

Product profile

Customization

Available

Material

Stainless Steel

Surface Treatment

Electroplating

Model NO.

2311

Application

Chemical Industry, Grain Transportation, Mining T

Transport Package

Standard Export Case

Specification

50-89mm

Trademark

Origin

Zhejiang

Production Capacity

400000piece/Year

Key features

High Torque Transmission: Welded steel sprocket to tube ensures high torque capacity for heavy duty transport.

Durable Precision Bearing: Precision ball bearing pressed tightly into steel housing for maximum durability.

Dust and Water Resistance: External covering protects bearings with excellent resistance to dust and splashed water.

Full Customization Available: Supports full customization, minor customization, and special items based on customer designs.

Stainless Steel Material: Constructed from stainless steel with electroplating surface treatment for longevity.

Company profile

Experienced TeamYears of Export ExperienceHigh Repeat Buyers Choice

HUZHOU EARN DOLLAR INTELLIGENT EQUIPMENT CO., LTD.

Zhejiang, China

CertifiedBusiness Type: Manufacturer/Factory & Trading Company CertifiedR&D Capacity: ODM Service Available & OEM Service Available CertifiedCustomization Options: Customization from Samples, Customization from Designs, etc. CertifiedExport Year: 14 Years CertifiedNearest Port: Shanghai Port, Ningbo PortAverage Response Time: ≤2.30h

AI-Powered supplier vetting

SummaryAND EXP. Co., Ltd demonstrates customization, ODM, and OEM capabilities, with one R&D engineer and evidence of new product development during the past year. Production information indicates one production line, stated output for rollers and sprockets, and equipment including CNC lathes, machining centers, assembly, cutting, punching, drilling, and welding machines. However, the supplier has no stated management-system certification, lacks documented R&D audit records, and has weakly documented service and complaint-handling procedures. It reports no overseas warehouses, showrooms, agents, branches, or offline trade-show participation. Quality-control resources include six to ten quality-control staff and two test-equipment units, but only one inspector is separately identified and ongoing batch quantity reconciliation is not performed. OEM service for known brands and export experience are stated, while specific customer names or verifiable customer cases are not provided.

Supplier typeThe supplier is presented as a manufacturing company with its own production equipment, one production line, and stated roller and sprocket output. Its capabilities include OEM, ODM, and product customization, indicating a manufacturer-oriented supplier profile rather than a service-only or trading-only profile.

CertificationsThe supplier management-system certification field is explicitly listed as NIL. This is direct evidence that no supplier management-system certification is reported in the provided information.

After-Sales capabilityAfter-sales and service governance appear weakly documented: the supplier has no written procedures or records for corrective and preventive actions or effective customer-complaint handling. It also reports no overseas warehouse, showroom, overseas agent or branch, and no overseas service countries, although it accepts multiple quotation and payment terms and reports a one-month lead time in both peak and off-seasons.

R&D capabilityThe supplier reports new products during the past year, provides ODM services, and has one R&D engineer responsible for sampling and developing products according to customer requirements. However, no SDK is available and no R&D audit documentation covering design inputs, outputs, reviews, verification, and validation is available, limiting evidence of a formal innovation system.

Production capacityProduction capability is supported by one production line, stated annual output of 22,000,000 rollers and 1,600,000 sprockets, and equipment covering machining, assembly, cutting, punching, drilling, and welding. However, the factory does not continuously reconcile quantities for each batch or mass production, which is a documented production-control weakness.

Customization capabilityThe supplier explicitly offers customization from samples and designs, flexible and full customization, and minor customization. Its R&D engineer is also assigned to sampling and new-product development according to customer requirements, providing direct support for customized product work.