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Z7 Hot Best-Selling Locking Device Locking Assembly Expansion Sleeve Shaft Locking

Name: Z7 Hot Best-Selling Locking Device Locking Assembly Expansion Sleeve Shaft Locking
Brand: Diligence & Fine Machinery (Qingdao) Co., Ltd.
SKU: 2143745882

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

US$30.90

100-199 Pieces

US$23.50

200-499 Pieces

US$5.60

500+ Pieces

Sample price:US$20.00/piece.Request sample

Product profile

Customization

Available

Standard Or Nonstandard

Nonstandard

Shaft Hole

19-32

Model NO.

Locking Device

Torque

as Per Requirement

Bore Diameter

as Per Requirement

Speed

as Per Requirement

Structure

Flexible & Rigid

Material

Stainless Steel,Iron, Aluminium

Type

as Per Requirement

Package

Suitalbe for Ocean and Air Shipment

OEM

Accetable

ODM

Acceptable

Factory Tour

Acceptable

Sizes

Full Range

Usage

Various Industires

Samples

Available

After Sales Service

Available

Bore Diameter.

90mm

Maximum Torque

100 Nm

Outer Race Size(mm)

47-355

Thickness (mm)

26-84

Weight (Kg)

0.2-19.2

Transport Package

Woode Box

Specification

100*100*100cm

Trademark

OEM

Origin

China

Production Capacity

1000000PCS/Year

Key features

High Precision & Torque: Maintains concentricity, minimizes radial runout, and ensures reliable torque transmission.

Quick Installation: Secures shafts without keyways; tightening achieved via screws for easy removal.

Customizable Design: Non-standard designs fully customizable; bore diameter 10mm to 200mm available.

Durable Materials: Made from high-strength steel with optional heat treatment or corrosion-resistant coating.

Wide Application: Compatible with V-belt pulleys, gears, gearboxes, fans, pumps, and compressors.

OEM/ODM Support: Supports OEM branding and custom packaging with rich experience for global brands.

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.