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Heavy Lock Device for Engineering Machinery
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
AvailableStandard Or Nonstandard
NonstandardShaft Hole
19-32Torque
as Per RequirementBore Diameter
as Per RequirementSpeed
as Per RequirementStructure
Flexible & RigidMaterial
Stainless Steel,Iron, AluminiumType
as Per RequirementPackage
Suitalbe for Ocean and Air ShipmentOEM
AccetableODM
AcceptableFactory Tour
AcceptableSizes
Full RangeUsage
Various IndustiresSamples
AvailableAfter Sales Service
AvailableBore Diameter.
90mmMaximum Torque
100 NmOuter Race Size(mm)
47-355Thickness (mm)
26-84Weight (Kg)
0.2-19.2Transport Package
Woode BoxSpecification
100*100*100cmTrademark
OEMOrigin
ChinaProduction Capacity
1000000PCS/YearKey features
Customizable Dimensions: Bore diameter 10mm to 200mm and outer diameter customized according to hub or gear dimensions.
High Torque Capacity: Ensures reliable torque transmission with even pressure distribution and high precision.
Quick Installation: Secures without keyways; tightening achieved via screws for fast assembly and removal.
Diverse Material Options: Available in 45# Steel, Alloy Steel, Stainless Steel (304/316), and Carbon Steel.
OEM and ODM Support: Full OEM/ODM branding and custom packaging services available for global clients.
Comprehensive Warranty: Provides a 12-month guarantee from the date of shipment for all products.
Wide Application Range: Suitable for fans, pumps, compressors, construction machinery, and automation systems.
Flexible MOQ Policy: Accepts sample orders with MOQ of 1 for standard products and customized requirements.
Company profile

Diligence & Fine Machinery (Qingdao) Co., Ltd.Shandong, China
Business Type: Manufacturer/FactoryNearest Port: Qingdao, Tianjin, ShanghaiAverage Response Time: ≤0.81hTerms 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., established in 2025, is a trading company based in Qingdao, Shandong, China. It specializes in the manufacturing and export of transmission components, with a significant portion of sales coming from exports. The company boasts a range of products including gears, pulleys, and belts, with an annual production capacity reaching up to 5 million pieces. The company emphasizes high-quality products and excellent service while operating over 10 production lines. It began exporting in December 2023 and uses both agency and self-managed export channels.
Supplier typeDiligence & Fine Machinery (Qingdao) Co., Ltd. is classified as a trading company, which indicates its primary business involves buying and selling goods rather than manufacturing them.
After-Sales capabilityThe company emphasizes providing excellent after-sales service as part of its commitment to customers and maintaining long-term business cooperation.
R&D capabilityThe company invests in advanced equipment and has a team of capable engineers, suggesting a focus on innovation and quality in manufacturing.
Production capacityWith an annual production capacity of 5 million pieces and over 10 production lines, the company displays strong production capabilities.
Customization capabilityThe company offers a variety of products including non-standard parts, indicating a willingness and capability to customize products according to client needs.
Product Q&A
Q:Are you a factory?
A:
Yes, we are factory. We have world leading manufacturing facilities which can meet different levels of product.
Q:What's your MOQ?
A:
MOQ. 1. Customized products: Depend on different products.
Q:How long is your warranty?
A:
Guarantee for 12 months from the date of shipment.
Q:Could you be the OEM for the customer?
A:
No problem, we have quite rich experience for world famous brands for dozens of years.
Q:What's your delivery time?
A:
Small standard products are always in stock. Big-sized products deliver in 15-20 days. Customized product delivery depends on different products.
Send Inquiry
*To:
Diligence & Fine Machinery (Qingdao) Co., Ltd.
Diligence & Fine Machinery (Qingdao) Co., Ltd.*Content:
Supplier replies will be sent to your registered email
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