VD Chain Block – Reliable Manual Hoist for Heavy Lifting
Product Summary
The VD chain block from Baoding Junyun is a manual hoist designed for reliable lifting in environments without power supply. With a rated load capacity from 0.5 to 50 tons and standard lift height of 3 meters (optional 2.5–12 m), it adapts to diverse industrial applications. Built with Grade V load chain and forged alloy steel hooks, it meets ISO 16872, EN 13157, and ASME B30.21 standards with CE marking. Its mechanical gear system and self-locking brake ensure precise, safe operation.
Key Selling Points
- High load capacity 0.5–50 t – Suitable for light to heavy tasks in manufacturing, construction, and shipbuilding.
- Grade V load chain (DIN EN 818-7) – Ensures durability and safety with a 4:1 safety factor on chain.
- Forged alloy steel hooks – Heat-treated for strength, with opening up to 55 mm for versatile hook attachments.
- ≤35 daN pull force – Enables efficient manual lifting without excessive effort, reducing operator fatigue.
- –20°C to +50°C operating range – Works reliably in extreme temperatures with standard grease.
Technical Specifications
| Parameter |
Value |
| Rated load capacity | 0.5 – 50 t |
| Standard lift height | 3 m (2.5–12 m optional) |
| Number of chain falls | 1 – 4 (depending on capacity) |
| Load chain specification | Grade V (80级) or Grade T (DIN EN 818-7) |
| Load chain diameter | 6.3 – 11.2 mm |
| Hand chain type | Round link, galvanised or zinc-plated |
| Hand chain length | Standard = lift height + 0.5 m slack |
| Pull force on hand chain | ≤ 35 daN (350 N) up to rated load |
| Headroom / hook distance (min.) | 300 – 1000 mm |
| Hook opening | 24 – 55 mm |
| Hook material | Forged alloy steel, heat-treated |
| Safety factor (chain / structural) | ≥ 4:1 / ≥ 5:1 |
| Operating temperature range | –20°C to +50°C (standard grease) |
| Protection / finish | Painted housing (RAL 2000 or 1007), corrosion-resistant chains |
| Standards | ISO 16872, EN 13157, ASME B30.21, CE marked |
Models and Options
Our manual hoist line includes multiple series to suit various needs: VD chain block (standard heavy-duty), VT chain block, HSZ chain block, HSC chain block, and VA lever block. Each model offers distinct configurations. Custom lift heights (2.5–12 m) and number of chain falls (1–4) are available.
Materials and Structure
The load chain is manufactured from alloy steels including 20Mn2, 25MnV, and 23MnNiMoCr54. The housing is painted in RAL 2000 or 1007 for corrosion resistance. Hooks are forged from alloy steel and heat-treated for maximum strength. The mechanical gear system uses precision-cut gears for smooth operation and a reverse-drive self-locking brake for instant, secure stopping.
Applications
Ideal for industries such as manufacturing, construction, logistics & warehousing, shipbuilding, mining, petrochemicals, power generation, bridge engineering, railway construction, automotive repair, agriculture, and stage construction. Common tasks include steel structure installation, bridge construction, water conservancy pipeline engineering, and precision installation in restricted power environments.
Customization
Standard configuration meets general requirements. Explosion-proof and high-temperature resistant configurations are available upon request. Custom lift heights, chain falls, and hook attachments can be supplied.
Case Study
Project: Bridge construction in India, Vietnam, Brazil, Turkey, Russia, UAE, and Saudi Arabia. Quantity: 2000 pcs of VD chain blocks. Duration: Over 2 years continuous use. Result: Low loss and reliable performance in long-term heavy lifting operations. Used for precise placement of steel beams and precast elements.
Frequently Asked Questions
- What is the maximum load capacity available? The VD chain block covers 0.5 to 50 tons with different chain fall configurations.
- Can the lift height be customized? Yes, standard is 3 m, but optional heights from 2.5 m to 12 m are available.
- What safety standards does it meet? It complies with ISO 16872, EN 13157, ASME B30.21, and is CE marked.
- What is the pull force required for operation? The pull force on the hand chain is ≤ 35 daN at rated load, ensuring manageable manual effort.
- Are explosion-proof models offered? Yes, explosion-proof and high-temperature resistant configurations are available on request.
- What is the minimum order quantity (MOQ)? MOQ is 50 pcs.
- What payment terms do you accept? 30% T/T in advance, 70% T/T against copy of B/L. We also accept FOB, EXW, CIF, CFR.
- Can you provide third-party inspection? Yes, pre-shipment test and third-party inspection (e.g., SGS) are available.
Inquiry Information
For pricing, availability, or customization requests, please contact us:
Email: Junyunsteven@163.com
Tel: +86 13483452631
WhatsApp: +86 13483452631
Address: Donglu Village, Qingyuan District, Baoding City, Hebei Province, China
MOQ: 50 pcs
Delivery: FOB, EXW, CIF, CFR
Payment: 30% T/T in advance, 70% T/T against copy of B/L
Inspection: Pre-shipment test, third-party inspection (e.g., SGS)
Image Filename and Alt Suggestions
- Main image: vd-chain-block-manual-hoist.jpg – Alt: "VD chain block manual hoist for heavy lifting – side view"
- Case study image: vd-chain-block-bridge-construction.jpg – Alt: "VD chain block used in highway bridge construction"
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