
RINGSPANN SF 107-25 K freewheel
- Brand
- RINGSPANN
- Category
- Power transmission
- Subcategory
- Freewheels
We respond promptly.
Since 1945 · Martínez, Buenos Aires, Argentina
Request your quote via WhatsApp or email, with the quantity you need.
Can't find the exact model? Write to us with the part number or model you're looking for: we'll find it and quote it, even if it's not listed in the catalog.
Description
RINGSPANN SF 107-25 K is a reference of freewheel, within Power transmission. Request a quote for SF 107-25 K via WhatsApp or email with the quantity you need; we respond promptly with the quote and equivalents.
RINGSPANN SF K series freewheels are power transmission components that allow rotation in one direction and lock in the opposite direction. They are used to prevent backdriving, control intermittent feeds or couple shafts according to the direction of rotation. MR Accesorios Industriales sells them in Buenos Aires, Argentina, with technical advice to choose the right model.
The designation of the SF K series is read step by step: the letters SF identify the cage freewheel family; the first number —as in SF 82-25 K, SF 107-25 K or SF 127-25 K— indicates the construction size; the second number, separated by a hyphen, refers to the shaft diameter or the mounting bore diameter; and the final letter K indicates an execution variant within the series. To confirm the exact interpretation of each part number, it is best to consult with the complete part number.
These freewheels are used in equipment where load holding, intermittent feed or protection against reverse rotation is required. In Argentine industry they appear in conveyor belts, bucket elevators, machine tools, presses, mixers and lifting systems. They are also mounted in speed reducers, auxiliary transmissions and safety mechanisms that must act in only one direction of rotation.
To select an SF K freewheel, take into account the shaft diameter, the free and locking direction of rotation, the operating speed and the environmental conditions. Mounting requires clean surfaces, correct alignment between shafts and adequate lubrication according to the environment. If there is dust, moisture or extreme temperatures, it is advisable to evaluate additional seals or protections to preserve the mechanism.
RINGSPANN freewheels can be interchanged with equivalent products from other brands, but the comparison must be made by mounting dimensions, load capacity and internal bearing type, not only by the part number. MR Accesorios Industriales is the exclusive representative in Argentina of RINGSPANN, which provides access to the line and to technical assistance to validate the equivalent before replacing a component.
If you already have the part number of the freewheel you need, send it by WhatsApp to MR Accesorios Industriales along with a photo or the equipment data. That way we can guide you on the right SF K variant and get back to you shortly. You can also ask about other series or special applications within the power transmission line.
Dimensions
Dimensions and tolerances: Send us the part number via WhatsApp and we'll confirm the dimensions and version against the manufacturer's data sheet.
Frequently Asked Questions
- What does the K mean in the SF K series?
- The final letter K identifies an execution variant within the SF series of RINGSPANN freewheels. To know exactly what difference that variant has in your model, send us the complete part number and we'll verify it with the available technical information.
- How do I know which freewheel I need for my equipment?
- We need the shaft diameter, the free and locking direction of rotation, the speed and the working conditions. With that data and the current part number if you have it, we'll guide you to choose the right SF K model.
- Do you ship anywhere in the country?
- We coordinate logistics from Buenos Aires, Argentina, to any point in the country. Write to us on WhatsApp with the part number or model you need and we'll get back to you shortly with the available options.

