Bolts with groove for retainers (suitable for clevises)

1. Product description

A bolt with a groove for retainers, suitable for clevises, is a flexible and reliable linking element that is used particularly in applications requiring precise fixation. The groove ensures the secure positioning of a retainer, which holds the bolt in the desired position. In use, the bolt is guided through the cross hole of a clevis and the retainer is inserted into the groove to create a firm and durable connection that reliably withstands mechanical loads.

Bolts with groove for retainers can be used universally in combination with clevises and are practical in many areas, including as lever connections in mechanical systems, e.g. in vehicles, machinery or agricultural equipment.

Made from high-quality materials such as steel or stainless steel, these bolts can also be used in corrosive and highly stressed environments. The use of special surface coatings such as galvanizing further improves resistance to weathering. Thanks to standardized dimensions, these bolts can be easily integrated into existing systems, making them ideal for use in a variety of industrial applications.

2. Produktdetails

Size: BEG 4 x 10,5 x 8,5 - BEG 25 x 57 x 50,5

Material group: Steel, stainless steel

Surface: bright, electr. galvanised white

d1 Bolt diameter: 4 - 25

l2 Grip length: 8,5 - 50,5

3. Application Areas & Compatibility

In industrial applications, bolts with groove for retainers are essential due to their versatility and robustness:

Mechanical engineering: These bolts are indispensable for fastening drive components used in production machinery and conveyor mechanisms. They ensure reliable movement retention that remains stable even under constant changes in load. In automated assembly lines, they contribute to the precise alignment and stability of machinery, increasing its service life and reducing maintenance costs.

Agriculture: In agricultural machinery such as tractors and combine harvesters, bolts with groove play a central role in securely connecting moving parts. They are particularly useful in hydraulic systems, where they serve as connecting elements for flexible adjustments under changing environmental conditions. The use of retainers prevents the connection from being lost due to strong vibrations or impacts, which are common on uneven terrain.

Construction: In the construction industry, these bolts are integral components for fastening mobile components in heavy machinery such as excavators and cranes. In hydraulic systems, they ensure that swivel arms and other moving parts remain securely positioned, which is crucial for smooth operation and safety on construction sites. They withstand high mechanical loads and help minimise downtime caused by mechanical failure.

Electrical installations: In electrical engineering, bolts with groove serve as stable fastening points for heavy cable ducts and retaining elements in electrical and electromechanical installations. Their robustness is particularly important in transformer stations or switchgear systems to withstand the high physical loads caused by cable weights and vibrations. Their use enables secure, durable fastening that considerably simplifies maintenance work.

Compatibility

Thanks to their standardised manufacture, compatibility with clevises, and the possibility of combining them with retainers, these bolts offer flexible integration into various systems. These features facilitate installation and maintenance, as no special tools are required, and enable replacement and adjustment in existing systems. They ensure even load distribution and minimise the risk of errors or damage during operation.

4. Advantages and Benefits

Safety and stability: Bolts with groove provide outstanding protection against unintentional loosening through the use of retainers such as KL-retainers, SL-retainers, bayonet clips or locking washers DIN 6799. This characteristic is particularly important in environments exposed to strong vibrations or shocks, as is often the case in mechanical engineering or the construction industry. The retainer sits securely in the groove of the bolt and helps maintain the structural integrity of the connection under dynamic loads, preventing potential system failures or safety issues.

Assembly and disassembly: A key advantage of these bolts is their straightforward handling. Since no thread is required, the time-consuming preparation of threaded holes and screwing-in are eliminated, resulting in a significantly reduced installation time. This saves valuable time during the assembly and disassembly of components, which is particularly advantageous for projects with tight schedules. It also reduces the need for specialised tools, facilitating the interchangeability of components.

Durability: Manufactured from resistant materials such as galvanised steel and stainless steel, these bolts are ideally suited for use in corrosive or extreme environments. The materials used guarantee high resistance to weathering and chemical attack, dramatically extending the service life of the connections. This is particularly important in industries such as agricultural engineering and shipbuilding, where mechanical components are often exposed to harsh conditions.

Cost efficiency: The standardised manufacture of these bolts results in savings in both inventory management and logistics. Standardised dimensions and designs allow the bolts to be used in different systems without requiring costly modifications. This reduces procurement and inventory management complexity, as specific parts do not need to be stocked for different applications; instead, a wide range of applications is covered by a single product type.

Flexibility and adaptability: Bolts with groove integrate seamlessly into a wide variety of mechanical systems, facilitating the replacement or expansion of such systems. Their standardisation makes it possible to modify or expand existing installations without the need for extensive conversions. This flexibility is crucial when companies want to modify their production lines or integrate new technologies, as they can continue using existing components while responding flexibly to changes.

5. Assembly and Installation

Component preparation: Before assembly, it should be ensured that all components - especially the contact surfaces - are free from dirt and damage. Residues or irregularities on the surfaces can impair the secure fit and stability of the connection. Thorough cleaning ensures optimum adhesion and minimizes the risk of material fatigue or corrosion.

Alignment of the components: Precise alignment of the bolt is essential. The bolt must be inserted exactly into the intended bores or openings to ensure full load-bearing capacity. Incorrect alignment can result in uneven load distribution, weakening the mechanical integrity of the connection and causing premature wear.

Assembly of the linking elements: Once the bolt has been correctly positioned, the retainer should be secured in the groove. The retainer prevents unintended displacement of the bolt. Suitable axial retainers are SL-retainers, KL-retainers, locking washers DIN 6799 and bayonet clips.

Safety check: The completed assembly must be checked for a secure fit and proper functionality. Ensure that the retainer is correctly seated and that the bolt is held firmly in position. Any play or looseness must be rectified immediately to maintain operational safety and maximize the efficiency of the connection.

Maintenance and inspection: Regular inspections are essential to ensure the long-term functionality of the connection. During these checks, the bolts and retainers should be examined for wear, corrosion, or other damage. Apply lubricant if necessary to minimize friction and increase the mobility of the connection. Regular maintenance contributes significantly to extending the service life of the connection and maintaining system efficiency.

6. Standards and Accessories

The relevant standards for bolts with groove suitable for clevises are:

DIN 1434: The design and technical details of bolts with groove are based on this standard for bolts with pin holes.

DIN 6799: This standard defines the product details of the suitable locking washers for the groove.

SL-retainer: This standardized retainer is also suitable for bolts with groove and, due to its design, provides additional protection against axial pull-out.

KL-retainer: This retaining element is available in the suitable sizes for grooved bolts and stands out for its easy handling during assembly and disassembly.

Bayonet clip: The intelligent design of this axial shaft retainer prevents unwanted axial movement and makes it easier to fit onto the bolt.

DIN 71752: This standard specifies the requirements for clevises with which the bolt is combined to ensure the correct fit and functionality.

All of the standards mentioned ensure a standardized and reliable connection solution in mechanical systems. The accessories, such as suitable retainers or clevises, make bolts with groove adaptable to a wide range of applications where safety, stability and ease of maintenance are crucial.