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The Lifting Clutch consists of a round main body with a protruding lever arm and a high strength bail. The main body has a "T" slot that engages the head of a dogbone anchor. The combined rotation capabilities of the main body and the bail allows a precast panel to be lifted, turned, tilted and/or rotated while under load.
- Surface treatment: WLL, Size, Grade, CE, Batch No.
- Application: Used in connecting operation
- Special specification and marks can be made according to customers
- Packing: Packed in cartons with plastic bags inside on iron pallets
- B. L= 4 times*WLL
- Proof tested to 2 ½ Times working load limit
| Place of Origin | Shandong, China |
| Model Numbe | Standard |
| Type | Lifting Clutch |
| Material | 20Mn2, Q345, Q235, CM490... |
| Surface Treatment | Zinc-plated, painted |
| Application: | lifting precast concrete element |
| Quality: | High Level |
| Certificate: | ISO9001 ,CE |
| Brand Name: | OEM |
| Capacity: | 1.3T-32 TAccept Customized |
1.Use solid carbon steel as raw material and Round Bar Cutting
2. Easy operation & environmentally friendly.
3. Could be used in the every orientation connection of reinforcing bars with same or different Diameter.
4. Good low temperature resistance, and could pass the -40 degree low temperature test
Inspection Before Use
The pre-use check for hooks should cover the following:
1. The WLL should be clearly marked.
2. The safety catch should be in place and functioning correctly.
3. The hook should be checked for any distortion, cracking and excessive wear or corrosion.
NOTE: The wear on the bearing surface of the hook should not exceed 8% of the nominal dimension.
4. Check that the opening of the hook is within the manufacturers parameters. If the hook is opened excessively it is a sign that it has been point loaded or overloaded.
5. Moving parts such as release cams should be checked for free movement.
6. If the hook is a ball bearing swivel hook check that the hook is swivelling freely and that the bearing is not making any unusual noises. Unusual noises are often a sign of bearing fatigue or bearing failure.
7. If the hook has a threaded machined shank ensure that the thread is in good order and that the nut is turning freely on the thread
Care in Use
1. For hooks used in frequent load cycles or pulsating loads, the hook and threads should periodically be inspected by Magnetic Particle or Dye Penetrant. (Note: Some disassembly may be required. )
2. Never use a hook if its throat opening has been increased, or its tip has been bent more than 10 degrees out of plane from the hook body, or is in any other way distorted or bent. Note: A safety catch will not work properly on a hook with a bent or worn tip.
3. Never use a hook that is worn beyond a recommended maximum of 8%.
4. Remove from service any hook with a crack, nick, or gouge. Hooks with cracks, nicks, or gouges shall be repaired by carefully grinding lengthwise, following the contour of the hook, provided that the reduced dimension is within the 8% wear limit.
5. Never repair, alter, rework, or reshape a hook by welding, heating, burning or bending.
6. Never side load, back load, or tip load a hook.
7. Eye hooks, shank hooks and swivel hooks are designed to be used with wire rope or chain. Efficiency of an assembly may be reduced when used with synthetic material.
8. Always make sure the hook supports the load. The catch must never support the load.
9. When placing two sling legs in a hook, make sure the angle from the vertical to the outermost leg is not greater than 45 degrees, and the included angle between the legs does not exceed 90
Degrees.
10. The WLL of a hook applies only when the load is correctly positioned on the load line of the hook. If the hook is eccentrically loaded, or the load is applied other than on the load line, the WLL is greatly reduced.
11. Always use a swivel hook, or insert a swivel link between the load hook and the lifting rope, when the load has a tendency to rotate when lifted.
12. Always check to ensure that the hook safety catch has closed correctly before allowing the load to be lifted
1. Long standing reputation in this field.
2. Specialization is standard and accurate meet your requirement.
3. OEM quality standard guaranteed.
4. Product upgrading and expansion of species.
5. Good quality with competitive prices.
6. Flexible and convenient logistic service.
7. Excellent and high quality control.
8. Long lasting working life time.
9. Sufficient storage.
10. Original truck spare parts and professional manufacture.
11. High technology and stable performance.
12. Various size and models available.
1. What is a Precast Concrete Lifting Clutch?
A Precast Concrete Lifting Clutch is a complete, engineered lifting assembly cast into precast concrete elements (like panels, beams, double-tees) during manufacturing. It provides a secure, rated connection point for crane hooks or lifting rigs to handle, tilt, transport, and erect the element. It typically consists of a steel lifting plate, reinforcing legs/anchors, and sometimes an integrated loop or shackle.
2. What are the primary applications?
It is a safety-critical component used for lifting all types of large, heavy precast elements:
Architectural Cladding Panels
Hollow Core Slabs & Double Tees
Structural Beams & Columns
Walls & Staircases
Tunnel Segments & Retaining Walls
3. What types of lifting clutches do you manufacture?
We produce a full range to meet various design and lifting requirements:
Standard Lifting Plate Clutches: A steel plate with welded reinforcing bars (rebar legs).
Heavy-Duty Clutches: With thicker plates and multiple/braced legs for extreme loads.
Inset/Flush Mount Clutches: Designed to sit flush with the concrete surface for a clean finish.
Tilt-Up Lifting Clutches: Specifically engineered for the dynamic forces during panel tilting.
Custom Clutches: Engineered to unique shapes, load cases, or reinforcement layouts.
4. What materials and specifications are used?
We use certified materials to ensure structural integrity:
Lifting Plate: Mild Steel (Q235B) or High-Strength Steel (Q345B), cut and drilled to specification.
Reinforcing Legs: High-Yield Rebar (e.g., Grade 500B/500C) welded to the plate. Leg configuration (number, angle, length) is designed for optimal load transfer into the concrete.
Finish: Typically self-color (mill scale) or hot-dip galvanized for corrosion protection if specified.
Load Rating: Each clutch is designed and marked with a Working Load Limit (WLL) and a Minimum Breaking Load (MBL).
5. How is the load capacity determined and certified?
Load capacity is a structural engineering calculation, not just the strength of the steel plate. It depends on:
Clutch Design: Plate thickness, leg size/number/length, weld strength.
Concrete Strength: At the time of lifting (early-age or design strength).
Embedment & Concrete Cover: Depth of embedment and distance to edges.
We provide engineering calculations and test reports for our standard designs. Each clutch is stamped or tagged with its WLL.
6. How is the clutch installed in the precast element?
Installation is done in the formwork before the concrete pour:
The clutch is accurately positioned according to shop drawings.
It is securely tied or welded to the primary reinforcement cage to prevent movement.
Concrete is poured, fully encapsulating the clutch's legs and plate (except the lifting eye).
Proper installation is critical and must follow our provided instructions.
7.What information do you need for a quotation?
For an accurate and meaningful quote, please provide:
Shop Drawings of the precast element showing proposed lifting points.
Design Loads: Required WLL per clutch, concrete strength at lift.
Preferred clutch type or a sample/drawing of what you currently use.
Annual volume estimate.
8. Can you provide Design Services or Review our Drawings?
Yes. Our in-house structural engineers offer:
Free Design Review: We can review your panel drawings and recommend clutch type, size, and location.
Custom Design Service: We will design a lifting clutch system tailored to your specific element, providing stamped calculation reports and detailed installation drawings.
Value Engineering: Suggest optimizations for safety, cost, or production efficiency.
9. Do you supply the lifting accessories (shackles, links)?
We are a complete lifting solutions provider and can supply:
Matched, rated shackles (Dee or Bow type).
Master Links and Lifting Links.
Turnbuckles for adjusting lifting angles.
Complete, certified lifting sets ready for the crane.
10. What is your MOQ (Minimum Order Quantity)?
Standard Clutch Designs: MOQ 100 pieces.
Custom Engineered Clutches: MOQ 500 pieces (due to design and setup costs).
Large Project Supply: MOQ negotiable for tender projects.
11. What is your lead time for design and production?
Design Approval & Samples: 15-25 working days.
Standard Production: 25-35 working days after order confirmation.
Custom Design & Production: 40-50 working days after final design approval.
If there's anything we could help you, please feel free to contact us.
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