A: It depends.If we have bulk goods in stock, we can ship goods within 3 days after the QC process. If we don’t have stock, normally it takes 7-15 days for OEM samples and 20-30 days for bulk goods. If it refers to opening the new mold, it takes an extra 7-15 days to make the mold.
Ball Bolt
Ball Head Bolts (Spherical Head Bolts): Overview
Material:
- Common materials:
- Carbon steel: Grade 4.8/8.8 for general applications.
- Stainless steel: 304/316 for corrosion resistance in marine or chemical environments.
- Alloy steel: Heat-treated grades (e.g., 4140) for high-strength, high-wear applications.
- Surface treatments: Zinc plating, hot-dip galvanizing, Dacromet coating, or PTFE coating for friction reduction and corrosion protection.
Manufacturing Process:
- Cold Heading: Forms the spherical head and partially threaded shank from steel wire.
- Thread Rolling: Precision rolling of threads (metric/SAE) using dies for high fatigue resistance.
- Head Machining: CNC turning or grinding to achieve a smooth, spherical surface with precise radius.
- Heat Treatment: Quenching and tempering (for high-grade steel) to enhance hardness (HRC 25-40).
- Surface Finishing: Coating or polishing to reduce friction and improve aesthetics.
Key Production Considerations:
- Spherical head geometry: Tight radius tolerance (±0.05mm) for consistent articulation in joints.
- Thread concentricity: Ensures smooth engagement with mating nuts or threaded holes.
- Surface finish: Mirror-like polish on the ball head to minimize wear in dynamic applications.
- Material hardness: Balances strength and ductility to prevent cracking under angular loads.
Applications:
- Automotive suspension: Ball joints, tie-rod ends, and steering linkages.
- Robotics: Articulated arms and rotational joints requiring multidirectional movement.
- Furniture: Adjustable fittings for chairs, tables, and modular systems.
- Industrial machinery: Pivoting connections in conveyors, cranes, and hydraulic systems.
- Marine equipment: Corrosion-resistant pivot points for rigging and davits.
Installation:
- Tool selection: Use a wrench or socket on the bolt’s flats (if present) or a specialized spherical socket.
- Alignment: Position the spherical head into a matching socket or bearing housing.
- Thread engagement: Hand-tighten the nut or threaded component to avoid misalignment.
- Torque application: Apply manufacturer-specified torque to the nut, ensuring smooth articulation.
- Lubrication: Apply grease to the spherical surface if required for high-movement applications.
Note:
- Load direction: Designed for combined axial and angular loads; avoid pure lateral forces.
- Maintenance: Regularly inspect for wear, corrosion, or play in the joint.
- Replacement: Replace bolts with pitted or scored spherical surfaces to prevent joint failure.
Ideal for engineers and designers needing multidirectional, low-friction fastening in dynamic mechanical systems.
Key Terms: Ball Head Bolts, Spherical Head Bolts, Articulated Fasteners, Multidirectional Joints, DIN 7339.
Frequently Asked Questions
A: Normally, we make a 30% deposit after Pl confirmation and a 70% balance before shipment. lf order amountis too small, we can also change to 100% deposit in order to save bank handling charge.
A: A pre-bulk sample check can solve this problem to the largest extent. We will arrange production according to the pre-bulk sample quality standard after your confirmation of the samples.
A: We are not only a trading company but also a manufacturer. Our factory mainly focuses on mold design and quality inspection. Our bulk production may come from the factories we have worked with for a long time, and they are all ISO9001 certified. Through this cooperation model, we can not only ensure product quality and service, but also satisfy the diversified product needs of customers, and the price is more advantageous.
A: Yes,we are very glad to offer you samples.
However the express courier cost from our company to your required address will be upon your account.
Usually we use DHL, UPS, FEDEX or EMS as the courier.
It will take 3-7 days to arrive many Europe countries and North America.
Which express courier we will use, it’s up to your convenient or the express charge.
A: No,just part of our capable categories have been showed in our site.
If you are looking for relative industrial products, please feel free to contact us.
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