Black Oxide Finished Steel Pulley for Rust Prevention

Name: Black Oxide Finished Steel Pulley for Rust Prevention
Brand: Diligence & Fine Machinery (Qingdao) Co., Ltd.
SKU: 2154444442

Shandong, ChinaDiligence & Fine Machinery (Qingdao) Co., Ltd.

US$36.50

50-99 Pieces

US$28.60

100-199 Pieces

US$10.50

200+ Pieces

Sample price:US$5.00/piece.Request sample

Product profile

Customization

Available

Certification

ISO, DIN

Pulley Sizes

Htd/Std/T/at/Curvilinear/Custom Timing Pulleys

Material

Aluminum Alloy,Stainless Steel,Ductile Iron

Surface Treatment

Anodizing, Blackening, Zinc Plating, Phosphating

Application

Automation Equipment and Drive Systems,3D Printers

Color

Black, White

Tooth Profiles

Htd (3m / 5m / 8m / 14m), Std, T Series,at,

Teeth Count

From 10 to 200 Teeth, Fully Customizable

Outer Diameter

Custom According to Drawing

Bore Options

Pilot Bore, Taper Bore, Locking Assembly,etc.

Flanges

Single or Double Flange Available

Teeth Profile

5m 8m Mxl XL L H 2m S2m 3m S3m 5m 8m 14m T2.5 T5 a

Applicable Industries

Construction Works,Energy& Mining ,Weaving Machine

Customized Support

OEM, ODM

Brand Name

D&F

Inner Bore

2-200mm H7 Precision or Customized

Belt Width

4-50mm

Teeth Quantity

10-150 Teeth or Customized

Transport Package

Bagging/Boxing

Specification

112-4M-115, 168-14M-85, 26H100F, 28H100F

Trademark

D&F

Origin

China

Production Capacity

5000

Company profile

Diligence & Fine Machinery (Qingdao) Co., Ltd.Shandong, China

Business Type: Manufacturer/FactoryNearest Port: Qingdao, Tianjin, ShanghaiAverage Response Time: ≤0.36hTerms of Payment: Small-amount payment, Western Union, T/TInternational Commercial Terms(Incoterms): FOB, EXW, CFR, CIF, CIP

AI-Powered supplier vetting

SummaryDiligence & Fine Machinery (Qingdao) Co., Ltd. is identified as a China-based limited trading company established in 2025, focused on transmission components and broader industrial machinery. The supplier reports more than 10 production lines, 6–10 quality-control staff, annual capacity of up to 5 million pieces, and export sales representing 71%–90% of total sales. Its stated product range includes gears, pulleys, belts, couplings, shafts, flanges, locking devices, and non-standard parts. The supplier claims design capability through experienced engineers, advanced equipment, and the ability to provide non-standard products, but the evidence does not establish certifications, documented customer cases, or proven after-sales performance. The records also contain capacity inconsistencies and state zero total staff experience, limiting confidence in the scale and maturity assessment.

Supplier typeThe supplier is explicitly classified as a Trading Company and a limited company based in Qingdao, China. Its business description further states that it integrates manufacturing and sales of transmission components, with products mainly for export.

R&D capabilityThe supplier claims that transmission parts are developed and designed by capable and experienced engineers and that advanced equipment has been invested in. It also lists high-precision products and various non-standard parts, providing some evidence of design and engineering capability, but no patents, R&D data, or verified innovation results are stated.

Production capacityThe supplier reports more than 10 production lines, 6–10 quality-control staff, annual capacity of up to 5 million pieces, and stated outputs for shafts, couplings, belts, pulleys, and gears; export sales are reported at 71%–90%. However, the 112.2 m² plant area, zero reported total staff experience, and inconsistencies in the capacity entries reduce confidence in the completeness and reliability of the production profile.

Customization capabilityThe product description explicitly includes various non-standard parts and castings, while the supplier states that its engineers develop and design a full range of transmission parts. This directly supports the ability to handle at least some customized or non-standard component requirements.