What are your terms of payment?

Small Amount: T/T 100% in Advance. Large Amount: T/T 30% as a deposit, and 70% before delivery. We'll show you the photos of the products and packages before you pay the balance.

Durable Coupling Solutions for Coal Mine Machinery Equipment

Name: Durable Coupling Solutions for Coal Mine Machinery Equipment
Brand: Diligence & Fine Machinery (Qingdao) Co., Ltd.
SKU: 2137603962

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

US$25.00

200 Pieces

Sample price:US$35.00/piece.Request sample

Product profile

Customization

Available

Standard Or Nonstandard

Standard or OEM

Shaft Hole

as Per Requirement

Model NO.

coupling

Torque

as Per Requirement

Bore Diameter

as Per Requirement

Speed

as Per Requirement

Structure

Flexible & Rigid

Material

Stainless Steel,Iron,Aluminium...

Type

as Per The Usage

Warranty

3 Years

Customized Support

OEM, ODM, Obm

Body Material

45# Steel

Rated Torque

31000

Applicable Industries

Industrial Equipment

Adjustment Ring Material

Stainless Steel

Installation Hole Type

Round Hole Type

Maximum Speed

1000rmp

Bore Diameter.

11mm

Flexible or Rigid

Flexible

Product Name

Flexible Couplings Coupler

Application

Industrial Equipment

Transport Package

Wooden Box

Specification

100*100*100cm

Trademark

D&F or OEM

Origin

China

Production Capacity

1000000PCS/Year

Key features

OEM/ODM Customization: Supports OEM, ODM, and OBM customization for unique machinery requirements.

High Precision Machining: CNC turning, grinding, and dynamic balancing ensure stable power transmission.

Misalignment Compensation: Effectively handles axial, radial, and angular offsets for smooth operation.

Durable Material Options: Available in 45# steel, 40Cr, aluminum alloy, and stainless steel.

Wide Application Scope: Suitable for pumps, valves, gearboxes, and various industrial mechanical drives.

Robust Torque Capacity: Rated torque up to 31000 Nm for heavy-duty and long-duration operations.

Flexible Design: Offers flexible and rigid structures to match specific usage scenarios.

Long Service Life: Wear-resistant elastomers and bushes reduce maintenance frequency.

Company profile

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

Business Type: Manufacturer/FactoryNearest Port: Qingdao, Tianjin, ShanghaiAverage Response Time: ≤0.37hTerms 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.