INA Power transmission

INA needle roller freewheel clutches are power transmission components that allow rotation in one direction and lock movement in the opposite direction. They are used as retention, non-return or indexing mechanisms in equipment where the direction of rotation must be controlled without external commands. MR Accesorios Industriales supplies this line as a brand, with technical advice to choose the correct part number for each application.

The designation of these freewheel clutches is read in blocks. The letters HFL identify the family of needle roller freewheel clutches with retaining rollers. The digits that follow indicate series dimensions: in HFL0308-KF-R, HFL0408-KF-R and HFL0606-KF-R the diameter and width of the assembly change, while HFL0615-KF-R, HFL0806-KF-R and HFL0822-KF-R cover other combinations. The suffix KF indicates the variant with built-in lubrication and R the version with a seal or lateral sealing, as applicable.

These freewheel clutches appear in machine tools, conveyors, packaging equipment, elevators, automatic doors and positioning systems. In Argentine industry they are found in production lines, textile equipment, printing machines and feed mechanisms where the shaft must rotate freely in one direction and remain locked in the other. They are also used in gearboxes, starting clutches and safety devices that prevent reverse rotation.

To select the correct freewheel clutch, take into account the shaft diameter, the available width, the required locking direction and the lubrication conditions. The KF variant already incorporates lubricant, but it is advisable to verify compatibility with the working environment. Mounting requires careful alignment and clean surfaces, because any misalignment affects the contact of the needles and reduces service life. If the equipment works with vibration or variable load, check the clearance and sealing.

Needle roller freewheel clutches are interchanged between manufacturers by part number and standardized dimensions, but not all brands use the same nomenclature. An INA HFL part number may have an equivalent in other lines, even if sealing or lubrication suffixes change. Therefore, it is advisable to compare diameter, width, locking torque and seal type before replacing. At MR Accesorios Industriales we help you verify the equivalence with the original part number.

If you need an INA needle roller freewheel clutch, send us the complete part number by WhatsApp or the model of the equipment where it is mounted. With that data we identify the corresponding HFL variant and send you the quote promptly. We can also advise you if you are looking for an alternative within the same family for your application.

The INA HF-KF series needle roller freewheel is a power transmission component that allows rotation in one direction and locks movement in the opposite direction. It is used to prevent backdriving, as an anti-return mechanism or to engage and disengage shafts depending on the direction of rotation. Its compact needle design makes it suitable for tight spaces and moderate torques.

The HF-KF series designation is read in steps: HF identifies the needle roller freewheel family; the following four digits indicate standardized dimensions, where the first two correspond to the bore diameter and the last two to the width, in millimeters. The -KF suffix indicates a design variant within the series. Thus, for example, HF0612-KF has a 6 mm bore diameter and 12 mm width, while HF1012-KF shares the width but has a 10 mm bore diameter. Knowing this logic makes it possible to quickly identify the size and order the correct part number.

These freewheels are used in Argentine industries such as metallurgy, food, textile and machine tools. They are found in anti-return systems, one-way clutches, conveyor belts, elevators, automatic doors and transmission equipment where a shaft needs to rotate freely in one direction and remain locked in the opposite direction. They also appear in safety mechanisms that prevent the backdriving of loads or linear movements.

To select an HF-KF freewheel, you must verify the shaft diameter, the available width, the torque to be transmitted and the rotational speed. Mounting requires shafts with adequate tolerance and a hardened surface, since the needles bear directly on the shaft. Lubrication must be the one indicated for the type of sealing and the service conditions; in dusty or humid environments, additional protection should be evaluated. Alignment between shaft and housing is critical to avoid lateral loads and premature wear.

As for equivalents, needle roller freewheels can be interchanged between manufacturers according to dimensions and load capacity, but the suffixes and tolerances do not always match. To replace an INA with another brand, compare bore diameter, outside diameter, width and permissible torque. If the part number is not available, it can be searched by dimensions or by application. MR Accesorios Industriales sells the INA brand and can guide you to the right equivalent.

If you need an INA HF-KF series needle roller freewheel, write to us on WhatsApp with the part number or the dimensions of your equipment. At MR Accesorios Industriales we reply promptly with your quote. We can also advise you on mounting, lubrication and care to extend the service life of the component.

The INA HF-KF-R series needle roller freewheel is a power transmission component that allows rotation in one direction and locks movement in the opposite direction. It is used to prevent backdriving, control intermittent feeds and protect mechanisms in industrial equipment. MR Accesorios Industriales supplies this INA line in Buenos Aires, Argentina, with technical advice to choose the right variant for the application.

The designation of the HF-KF-R series is read in blocks: HF identifies the needle roller freewheel family; the numbers that follow indicate the size and load capacity; KF indicates a construction variant with specific sealing or lubrication characteristics; and R distinguishes a particular version within the series. Examples such as HF0306-KF-R, HF0406-KF-R, HF0612-KF-R and HF0812-KF-R show how the part number changes according to size. To select, provide the complete part number shown on the equipment or on the nameplate.

These freewheels are used in the food, packaging, textile, plastics and automation industries, where backstop control or intermittent feed is required. In Argentina, they are commonly found in conveyor belts, filling machines, indexing systems and cutting equipment. They are also used in gearboxes, chain drives and safety mechanisms that must lock in the event of a reversal of rotation. MR Accesorios Industriales supplies them for replacement and new projects.

To select a needle roller freewheel, take into account the shaft diameter, the rotation speed, the torque to be transmitted and the environmental conditions. The KF seal protects against dust and moisture, while the R variant may indicate a specific rolling arrangement. Mounting requires cleanliness, correct alignment and suitable lubrication; poor alignment accelerates wear. If the equipment operates at high temperatures or with dirt, choose the corresponding seal.

Needle roller freewheels are available from different brands, and equivalences are established by dimensions and load capacity, not only by the part number. When replacing an INA with another brand, verify the bore diameter, outside diameter, width and permissible torque. In general, interchangeability requires confirming the sealing arrangement and the direction of rotation. If you have any doubts, send a photo of the part and the dimensions to the MR Accesorios Industriales WhatsApp.

If you need an INA HF-KF-R series needle roller freewheel, write to us on WhatsApp with the part number or the model you are looking for. We will quote you shortly and help you confirm the right variant for your equipment. We work with more than 80 years of experience in the field, since 1945, and we handle technical inquiries from all over the country.