How to Choose RINGSPANN by Application: Load, Speed, Environment and Mounting

RINGSPANN shaft-hub connections transmit torque between a shaft and a hub without the need for keys or splines. They are ideal when quick assembly and disassembly is needed, or when radial space is limited. The choice depends mainly on the torque to be transmitted, the shaft diameter and the available hub length. For reference, the catalog lists shaft-hub connections with codes such as 1051-039002 and 1051-067001.

Another example from the same family is code 1052-084001. This type of connection is used in gearboxes, pumps and machine tools. When requesting a quote, it is advisable to indicate the shaft diameter, the required torque and whether the mounting is in a blind or through hub. It is also useful to know if there are additional axial loads, because some connections combine axial and radial fixing.

A common mistake is not checking the permissible surface pressure of the hub. If the hub is made of cast iron or aluminum, it may be necessary to choose a connection with a larger contact surface or reduce the permissible torque. Another point to consider is disassembly: RINGSPANN connections are disassembled by loosening the screws, and in corrosive environments protection should be provided. For an accurate selection, send the code engraved on the part or the shaft and hub dimensions.

RINGSPANN couplings compensate for misalignment between shafts and transmit torque with different rigidity characteristics. The catalog includes, for example, couplings SKDZ 10 and SKDZ 20. When choosing, consider the nominal torque, maximum speed and expected angular, radial and axial misalignment.

For applications with greater misalignment or where vibration damping is required, review elastic couplings, which absorb impacts and tolerate some misalignment. Another coupling code in the catalog is RDZ 0100 DTO. It is common in pumps, compressors and conveyors. When requesting a quote, specify the shaft diameters, the distance between ends and the predominant type of misalignment. It is also important to know if the coupling must be electrically insulating or resistant to high temperatures.

A frequent mistake is choosing a coupling only by shaft diameter, without checking peak torque. During starts under load or sudden braking, torque can exceed the nominal value and damage the flexible element. Therefore, calculate the service torque by multiplying the nominal torque by a factor according to the application. If in doubt, send us a photo of the current coupling or the motor and machine nameplate data.

RINGSPANN freewheels allow rotation in one direction and lock in the opposite. They are used in conveyors, lifting systems and intermittent feed mechanisms. The catalog lists freewheels with codes such as FN 8 and FN 60. The choice depends on the torque to be transmitted, the freewheel speed and the engagement frequency.

Another example of a freewheel in the catalog is code FB 72. When requesting a quote, indicate the shaft diameter, the required locking torque and whether the freewheel operates in an oil bath or with grease lubrication. It is also key to know if the freewheel rotation is continuous or intermittent, because that influences wear.

A common mistake is not providing adequate lubrication. RINGSPANN freewheels require lubricant according to speed and working temperature. In dusty or humid environments, choose versions with seals. If the freewheel is mounted in a housing, check the fit: a too-tight fit can block the mechanism. For a correct selection, send the part code or the housing and shaft dimensions.

RINGSPANN precision clamping systems are used to hold parts in machine tools, measuring devices and rotary tables. The catalog lists precision clamping elements with codes such as BKDI 6 and BKDI 7. The choice depends on the diameter of the part to be clamped, the required clamping force and the required concentricity precision.

Another example is the precision clamping system BKDF 6. This type of system is integrated into lathe chucks or milling tables. When requesting a quote, indicate the part diameter, the material (steel, aluminum, plastic) and whether the clamping must be internal or external. It is also important to know the available hydraulic pressure if actuation is by that means.

A frequent mistake is not considering the rigidity of the complete system. Precision clamping requires that the spindle and chuck have sufficient rigidity to avoid vibrations. Also, check the clamping stroke to avoid damaging delicate parts. If you are replacing an existing system, send the engraved code or the housing and part dimensions.

RINGSPANN torque limiters protect machines and tools against overloads. They are used in conveyor drives, mixers and agricultural machinery. Within this family, the catalog includes force limiters such as PA 50 and PA 75. The choice depends on the trip value, working speed and expected frequency of overloads.

Another code from the same series is PA 20. When requesting a quote, indicate the nominal torque of the transmission, the permissible peak torque and the shaft diameters. It is also useful to know if the limiter must have an electrical or mechanical trip signal to stop the machine.

A common mistake is adjusting the limiter without a calibrated torque wrench. Incorrect adjustment can cause premature trips or, worse, fail to trip under a real overload. Also, check that the limiter is correctly aligned with the shafts to avoid additional radial loads. If you have doubts about the adjustment range, consult us with the limiter code or drive characteristics.

RINGSPANN remote control systems transmit control movements remotely, for example in valves or hard-to-reach mechanisms. They consist of flexible cables and connection accessories. The choice depends on the distance to cover, the control travel and the required force. It is important to consider the minimum bending radius of the cable to avoid fatigue damage.

RINGSPANN cardan shafts are used to transmit torque between non-aligned shafts, such as in agricultural machinery and industrial vehicles. Selection is based on the torque to be transmitted, the working angle and the rotation speed. An excessive angle reduces service life and generates vibrations. When requesting a quote, indicate the distance between flanges, the shaft diameters and the maximum working angle.

A common mistake is not planning for maintenance of the universal joints. Cardan shafts require periodic lubrication and clearance checks. In dusty or wet environments, choose versions with reinforced seals. If you are replacing a cardan shaft, send the flange dimensions and the compressed and extended length.

RINGSPANN industrial brakes are used to stop or hold loads in position. They are applied in cranes, winches and machine tools. The choice depends on the required braking torque, rotation speed and duty cycle. It is essential to consider whether the brake must operate dry or in an oil bath, because that changes the friction coefficient.

When requesting a quote for a brake, indicate the braking torque, the disc or drum diameter, and whether the actuation is hydraulic, pneumatic or electromagnetic. It is also important to know if the brake must have manual emergency release. A brake is sized according to static and dynamic torque, and its heat dissipation capacity.

A frequent mistake is not considering response time. In safety applications, the brake must act quickly to prevent accidents. Also, check the wear of pads or discs and plan for their replacement. If you need a brake for a specific application, send us the equipment code or the housing dimensions and required torque.