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High Machining Accuracy Heavy Loads Bolt-on Spiral Hub

Name: High Machining Accuracy Heavy Loads Bolt-on Spiral Hub
Brand: Diligence & Fine Machinery (Qingdao) Co., Ltd.
SKU: 2256881455

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

US$7.00

500 Pieces

Sample price:US$7.00/piece.Request sample

Product profile

Customization

Available

Standard

DIN, GB, ISO

Material

Carbon Steel,Alloy Steel,Aluminum Alloy

Model NO.

Spiral Hub

Connection

Shaft Discs & Flanges

Surface Treatment

Polished or Sandblasted

Head Type

as Per Requirement

Color

Black or White

Shaft Diameter

10mm to 500mm, Customizable

Outer Diameter

Customized According to Hub or Gear

Bore & Keyway

Standard or Custom

Flange Thickness

Customized Based on Load and Application

Mounting Holes

According to DIN / ISO / GB Standards

Trade Term

Fob, C&F,CIF

Payment Term

T/T or Other Acceptable Payment Terms

Packing

Suitable for Ocean and Air Transportation

OEM

Acceptable

ODM

Acceptable

Sample

Available

After Sale Service

Available

on Site Inspection

Available

Transport Package

Bagging/Boxing

Specification

SM30-1, BF- 20

Trademark

D&F

Origin

China

Production Capacity

1000000PCS/Year

Key features

High Machining Accuracy: Ensures shaft-to-hub concentricity and minimizes radial runout for stable torque transmission.

Heavy Load Capacity: High-strength materials withstand high torque and heavy loads in industrial drive systems.

Full Customization: Shaft diameter 10-500mm, OD, bore, keyway, and flange thickness are fully customizable.

Wide Material Options: Available in Carbon Steel, Alloy Steel, Stainless Steel, Aluminum Alloy, and Ductile Iron.

Surface Treatment: Options include polished, sandblasted, blackening, phosphating, zinc plating, and anodizing.

OEM/ODM Service: Acceptable OEM/ODM branding and packaging solutions for sample and mass production.

Versatile Applications: Suitable for gears, pulleys, pumps, compressors, construction, and automation machinery.

Secure Packaging: Products undergo strict QC and protective packaging to prevent damage during worldwide shipping.

Company profile

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

Business Type: Manufacturer/FactoryNearest Port: Qingdao, Tianjin, ShanghaiAverage Response Time: ≤0.34hTerms 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.