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Steel sprocket with straight teeth and central bore for shaft · SKF PHS 40-1DSA21
Sprockets and gears SKF PHS 40-1DSA21

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Sprockets and gears SKF PHS 40-1DSA21

Manufacturer Part Number
PHS 40-1DSA21
Brand
SKFOfficial brand
Category
Power transmission
Subcategory
Sprockets and gears

SKF

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Description

SKF PHS 40-1DSA21 is a sprockets and gears reference, within Power transmission. Request a quote for PHS 40-1DSA21 via WhatsApp or email with the quantity you need; we respond promptly with lead time and equivalents.

SKF PHS DSA series sprockets are chain sprockets for power transmission by chain. They are mounted on shafts and mesh with roller chains to transmit motion and torque in a wide variety of machines. Their design and manufacturing follow SKF standards, an official brand that MR carries, which guarantees reliability and good performance in demanding industrial applications.

The designation of these sprockets is interpreted as follows: PHS identifies the SKF sprocket line; the number that follows (for example, 40) indicates the chain pitch according to the ASA standard; -1 indicates it is single strand (one row); DSA corresponds to the execution with hub and pilot bore; and the final number (15, 16, 17, etc.) is the number of teeth. Thus, a PHS 40-1DSA15 is a pitch 40 sprocket, single strand, with 15 teeth. Suffixes may vary to indicate special finishes, but in this series the basic structure is maintained.

These sprockets are used in chain drives of industrial machines, conveyors, elevators, agricultural equipment, packaging lines and motion systems in food and beverage plants. In Argentina, they are common in the metallurgical and cement industries and in the agro-industrial sector, where a robust, low-maintenance drive is required. Their construction allows them to adapt to different mounting configurations and transmission ratios.

To select the right sprocket, take into account the chain pitch, the number of teeth, the shaft diameter and the type of hub. Verify that the pilot bore can be machined to the required diameter and that the hub is wide enough for mounting. Alignment between sprocket and chain is critical: misalignment accelerates wear. Lubricate according to the manufacturer's recommendations and periodically check chain tension. If you need to modify the bore, do so with suitable tolerances to avoid eccentricity.

As for equivalences, SKF PHS DSA series sprockets follow ASA standards for pitch and number of teeth, so they can be interchanged with other brands that respect those dimensions. However, always verify the hub dimensions and bore diameter, as they may vary between manufacturers. We do not invent part numbers from other brands; if you have doubts, ask us with the full designation and we will help you find the best option.

If you need an SKF PHS DSA sprocket, send us the full part number by WhatsApp to MR Accesorios Industriales. We will quote you and advise you so you choose the right option for your application. With more than 80 years of experience, at MR Accesorios Industriales we are here to help you.

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 designation PHS 40-1DSA15 mean?
PHS indicates the SKF sprocket line; 40 is the chain pitch according to ASA standard; -1 means single strand (one row); DSA is the execution with hub and pilot bore; and 15 is the number of teeth. So, it is a pitch 40 sprocket, single strand, with 15 teeth.
How do I choose the right sprocket for my machine?
You need to know the chain pitch, the desired number of teeth, the shaft diameter and the available space. Also consider the transmission ratio and the service conditions. If you have doubts, ask us with your application data and we will advise you.
Are SKF sprockets interchangeable with other brands?
Yes, as long as they respect the ASA standardized dimensions for pitch and number of teeth. Still, verify the hub and bore dimensions, because they may vary between manufacturers. For a safe replacement, compare the critical measurements before mounting.
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