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Steel sprocket with straight teeth and central bore for shaft · SKF PHS 40-1B45SS
Sprockets and gears SKF PHS 40-1B45SS

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Sprockets and gears SKF PHS 40-1B45SS

Manufacturer Part Number
PHS 40-1B45SS
Brand
SKFOfficial brand
Category
Power transmission
Subcategory
Sprockets and gears

SKF

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Description

SKF PHS 40-1B45SS is a sprockets and gears reference, within Power transmission. Request a quote for PHS 40-1B45SS via WhatsApp or email with the quantity you need; we respond promptly with lead time and equivalents.

SKF PHS series sprockets with SS suffix are stainless steel sprockets for pitch 25 (1/4" x 1/8") roller chains. They are used in drives where corrosion or hygiene is critical, such as the food, pharmaceutical or beverage industries. MR Accesorios Industriales carries this line as part of its power transmission offering.

The designation PHS 25-1B9SS reads as follows: PHS identifies the SKF sprocket series for roller chains; 25 is the chain pitch in eighths of an inch (25/8 = 1/4"), also known as pitch 25; 1B indicates single strand (a single row of teeth); the following number, 9, is the number of teeth; and SS indicates that the material is stainless steel. Series examples, such as PHS 25-1B10SS or PHS 25-1B16SS, show how the number of teeth varies while keeping the same pitch and configuration. This nomenclature lets you quickly identify the sprocket you need.

These sprockets are used in low- and medium-power chain drives where corrosion resistance is a requirement. Industries such as food, where equipment is washed frequently, pharmaceutical, which requires clean environments, or beverage, which works with constant humidity, tend to choose stainless steel components. They are also used in packaging machines, conveyors and process equipment in general. In Argentina, MR Accesorios Industriales supplies this line to plants that need reliable, long-lasting spare parts.

To select the right sprocket, take into account the number of teeth: the lower the number, the higher the chain speed and the more wear; the higher the number, the smoother the drive but the larger the outside diameter. Check that the pitch matches the chain (25 in this case) and that the bore and keyway are compatible with the shaft. Assembly must ensure precise alignment between sprocket and chain to avoid premature wear. Proper lubrication and correct chain tension extend service life. Sealing does not apply to sprockets, but cleanliness of the environment does.

As for equivalencies, SKF PHS series sprockets can be interchanged with those from other manufacturers that follow the same pitch standard and number of teeth, provided the hub and bore dimensions are compatible. Do not invent codes: if you need to replace a sprocket, compare the actual measurements and the standardized designation. Interchangeability between brands depends on respecting tolerances and tooth profile. Always consult a specialist before replacing a critical component.

If you already have the code for your SKF sprocket, such as PHS 25-1B12SS, send it via WhatsApp to MR Accesorios Industriales and we will quote you. We can also advise you if you need help identifying the correct part for your application. With more than 80 years in the market, MR Accesorios Industriales is your partner for power transmission.

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 SS suffix mean in SKF PHS sprockets?
The SS suffix indicates that the sprocket is made of stainless steel. This makes it suitable for corrosive environments or where hygiene is required, such as the food industry. Do not confuse it with other suffixes; SS is specific to stainless steel.
How do I choose the number of teeth for my sprocket?
The number of teeth determines the drive ratio and chain speed. For high speeds, few teeth are used, but wear is greater. For smooth, quiet drives, more teeth are preferable. Also evaluate the available space.
Are SKF PHS SS sprockets compatible with chains from other brands?
Yes, as long as the chain is the same pitch (25 in this case) and complies with the corresponding standard. Compatibility depends on pitch and tooth profile, not on the brand. Check the dimensions before mounting.
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