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Sprockets and gears SKF PHS 120-2TBH20SP-4040
- Manufacturer Part Number
- PHS 120-2TBH20SP-4040
- Brand
- SKFOfficial brand
- Category
- Power transmission
- Subcategory
- Sprockets and gears
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Description
SKF PHS 120-2TBH20SP-4040 is a sprockets and gears reference, within Power transmission. Request a quote for PHS 120-2TBH20SP-4040 via WhatsApp or email with the quantity you need; we respond promptly with lead time and equivalents.
The SKF PHS TBH SP line sprocket is a chain drive component that mounts on shafts and is used to transmit motion in industrial machines. It is manufactured from quality steel with heat treatment that gives it wear resistance. Its design allows mounting with taper bushings or directly on the shaft, depending on the configuration. It is a key part in drive systems that require synchronization and reliability, and it is available through MR Accesorios Industriales, which carries this official brand.
The PHS TBH SP series designation is read in parts. PHS identifies the category of SKF sprockets for roller chains. TBH indicates that the sprocket has surface hardening treatment. SP indicates a special mounting configuration. The number that follows, as in the example PHS 120-2TBH20SP-4040, indicates the chain pitch and the number of teeth. The final numeric suffixes correspond to the bore diameter and the bushing type. Knowing this data is key to ordering the correct replacement.
These sprockets are used in industries such as food, cement, mining and logistics. They are found in chain conveyors, bucket elevators, belt conveyors and packaging machines. In Argentina, they are common in milling plants, meatpacking plants and plastics factories. Their function is to transmit motion from the drive shaft to the chain, maintaining synchronization and withstanding variable loads. The choice of pitch and number of teeth defines the drive ratio and the final speed of the equipment.
To select the right sprocket, take into account the chain pitch, the number of teeth, the shaft diameter and the mounting type. Check that the bore and keyway match the shaft. If the sprocket is mounted on a taper bushing, make sure the bushing is compatible. Lubrication is essential: use the lubricant recommended for chains and check the level periodically. Alignment between sprocket and chain must be precise to avoid premature wear. Mounting with excessive play or misalignment shortens the service life of the chain and the sprocket.
As for equivalences, SKF PHS TBH SP line sprockets can be interchanged with those from other brands that follow the same pitch standard and number of teeth. What matters is respecting the hub dimensions, the bore diameter and the fastening type. Not all brands use the same nomenclature, so it is best to compare the actual measurements. If you have doubts, the complete part number of the original sprocket is the best reference for finding the replacement. MR Accesorios Industriales can help you identify the part from that code.
To request a quote for the SKF sprocket you need, send us the complete part number by WhatsApp. With that data, our technical team verifies the configuration and replies promptly. If you do not have the part number, we can guide you to identify it from the measurements or the application. We work with in-house manufacturing and recognized brands to cover industrial maintenance needs. Write to us and we will advise you with no obligation.
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
- What does the abbreviation PHS mean in SKF sprockets?
- PHS identifies the SKF sprocket line for roller chains. Within that category, suffixes such as TBH and SP indicate treatments and mounting configurations. The number that follows refers to the chain pitch and the number of teeth. With the complete part number the part can be identified.
- How do I know if this sprocket is compatible with my machine?
- You need to verify the chain pitch, the number of teeth, the bore diameter and the mounting type. Compare these measurements with the original sprocket. If you have the part number of the old replacement, send it to us and we will cross-reference it with the SKF line. We can also help you measure if you do not have that information.
- What lubrication do you recommend for these sprockets?
- Lubrication depends on the speed and load of the system. In general, oil or grease for roller chains is used, applied regularly. It is important to keep the chain clean and lubricated to reduce wear. Consult the machine manual or ask us for advice to choose the right lubricant.

