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Drive pulley SKF PHP 4-C50-SD
- Manufacturer Part Number
- PHP 4-C50-SD
- Brand
- SKFOfficial brand
- Category
- Power transmission
- Subcategory
- Pulleys and V-belts
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Request your quote via WhatsApp or email, with the quantity and time frame you need.
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Description
SKF PHP 4-C50-SD is a drive pulley reference, within Power transmission. Request a quote for PHP 4-C50-SD via WhatsApp or email with the quantity you need; we respond promptly with lead time and equivalents.
SKF pulleys from the PHP-SD line are V-belt drive components that are mounted on shafts using a split taper bushing. They are used to transmit power between parallel shafts in industrial equipment, with the advantage of simple mounting and dismounting and a firm fit. MR Accesorios Industriales carries this line as part of its power transmission offering, along with belts, housings and bearings.
The designation of these pulleys combines the number of grooves, the pitch diameter and the bushing type. For example, in PHP 3-C50-SD, the 3 indicates three belt grooves, C50 refers to the pitch diameter in inches and SD identifies the taper bushing that secures the pulley to the shaft. In PHP 4-C55-SD, the 4 is four grooves and C55 the diameter. Knowing this data is key to replacing an existing pulley without errors.
These pulleys are used in industrial fans, centrifugal pumps, screw compressors, conveyor belts and machine tools. In the Argentine market they appear in food, textile and chemical plants and in maintenance workshops that replace worn pulleys or change transmission ratios. Combining them with V-belts of the appropriate profile allows building a complete system for different powers and speeds.
To select correctly, verify the belt profile (SPZ, SPA, SPB or SPC), the number of grooves, the pitch diameter and the range of admissible bushings. The taper bushing must be mounted clean and dry, without lubricant on the taper, and tightened to the torque recommended by the manufacturer. Alignment between pulleys prevents uneven belt wear and vibrations. If there is a lot of dust or moisture, consider guards or pulleys with surface treatment.
SKF pulleys are interchangeable with other brands in terms of standardized dimensions and belt profiles, as long as the pitch diameter, number of grooves and bushing type match. Not all brands use the same fastening system, so it is advisable to compare the bushing and the shaft bore before replacing. MR Accesorios Industriales can advise you on equivalences without compromising the drive.
If you have the pulley part number or the equipment data, send them by WhatsApp to MR Accesorios Industriales. With that information we'll quote you the SKF pulley you need and the complementary accessories, such as belts and bushings.
This description provides guidance on the product type. Check the configuration and dimensions of this reference.
Dimensions
Dimensions and tolerances: Send us the part number via WhatsApp and we'll confirm dimensions, sealing, and internal clearance against the manufacturer's data sheet.
Frequently Asked Questions
- How do I identify the pulley I need?
- You need the full part number, for example PHP 3-C50-SD, or the equipment data: number of grooves, pitch diameter, belt profile and bushing type. With that we can quote the correct pulley.
- What does the SD suffix in the designation mean?
- The SD suffix indicates the type of taper bushing the pulley uses to mount on the shaft. It is important that it matches the shaft bore and the existing fastening system.
- Are SKF pulleys compatible with other brands?
- Yes, in general they are interchangeable if the pitch diameter, number of grooves and bushing type match. We recommend verifying the bushing and the shaft before replacing.

