V-belt XPA 2632 - 13x10 MM - PIX X'tra ®

V-belt XPA 2632 - 13x10 MM - PIX X'tra ® with Li 2587 mm, Ld 2632 mm and La 2650 mm

V-belt XPA 2632 - 13x10 MM - PIX X'tra ® is a raw edged and Cogged V-belts from the PIX X'tra® series. It is intended for belt drives where the profile, length and pulley groove must match exactly to ensure stable operation. This variant has profile XPA, goal 13x10MM, effective length Length 2632 mm, inside length 2587 mm and external length Width 2650 mm.

XPA is a medium profile in the XP series and is a relevant belt type when the pulleys are intended for a narrow Cogged V-belts with the dimensions 13x10 MM. It should be used in pulleys that fit XPA and 13x10MMA belt with the same length but the wrong profile is not a safe alternative because the belt may be in the wrong groove and thus provide less contact surface.

Product data

• Profile: XPA
• Goal: 13x10MM
• Effective length: Length 2632 mm
• Inner length: 2587 mm
• External length: Width 2650 mm
• Series: PIX X'tra® Molded Raw Edge Cogged Belts
• Construction: raw edge and Cogged V-belts
• Profile angle according to PIX data sheet: 36° ± 1°
• Mark: PIX

Length specifications

When a belt is specified from an older marking, it is usually best to compare both the letter profile and length designation. A belt marked as XPA 2632 should not be confused with another profile of the same nominal length. Therefore, consider both Li, Ld and La together with the profile and dimensions.

The Ld dimension is the effective length and the length specification typically used for narrow V-belts. Li describes the inner length, while La describes the outer length. The three dimensions must be understood together with the profile, cross-section and pulley grooves, because the length designation alone does not describe the full geometry of the belt.

With Ld 2632 mm, the belt is a very long variant in this product group. Long belts require special attention to alignment, correct tensioning and the quality of the pulleys, because small deviations can propagate over a larger belt length.

Construction and technical features of PIX X'tra®

The construction is built for power transmission through the sides of the belt. According to PIX, the series consists of a cover in a special fabric layer, a cushion matrix in a rubber compound, a polyester cord as a tensile member and an EPDM base compound in the compression zone. It is precisely this combination that distinguishes a technical industrial belt from a random standard belt that is just about the same length.

When comparing to various V-belts, PIX X'tra® is relevant because the series combines raw edge grip with timing flexibility. According to the manufacturer's data, the series can provide higher power transmission than wrapped belts, better heat dissipation and operation at higher belt speeds, provided the belt is used in a correctly constructed belt drive. This makes the series suitable for many industrial operating tasks.

For the XPA profile, the PIX data sheet states the length range 550–5000 mm. This belt with Ld 2632 mm is in the range 550–3000 mm, where the data sheet states a length tolerance of ±6 mm and a set tolerance of 2 mm. The tolerances are relevant when replacing, especially if several belts are to run in parallel or if the center distance can only be adjusted to a limited extent.

Use for the XPA profile

If the machine has previously used a regular wrapped V-belt, a timing raw edge type may be interesting for compact drives or when greater flexibility is needed. This does not mean that all belts can be freely replaced. The safe method is to maintain the same profile family, assess the length and ensure that the pulleys are suitable for the specified belt type.

In practice, this type of belt is often used for medium-sized industrial belt drives, fans, pu , compressors and other machines where more bearing surface is desired than XPZ. ​​However, the belt should not be selected solely based on the machine type. Two machines can use different profiles, even if they look similar from the outside. The correct check is therefore the product name, belt marking, pulley profile and the three length measurements.

Profile and pulley compatibility

XPA belongs to the same narrow profile family as SPA, but the belt has its own technical specification with a timing, raw-edge construction. The belt works with side contact in the pulley groove, and the correct groove profile is necessary for the contact surface, friction and load to be distributed correctly. Incorrect cross-section or skewed pulleys can cause overheating, noise, slippage and uneven wear.

The technical identification consists of the combination XPA, 13x10MM, Length 2632 mm, 2587 mm, Width 2650 mm and PIX X'tra®The combination distinguishes the item from nearby V-belts with other profiles, other length standards or a different construction.

Installation and operation

After start-up, it is wise to listen for abnormal noise and feel for abnormal heat when it is safe to do so. Slippage, whining, vibrations or black belt dust may indicate incorrect tension, incorrect profile, worn pulleys or excessive load. The fault should be found before the machine continues to run for a long time.

When installing, the belt should be placed without being twisted or forced over the pulley with a screwdriver or other sharp tool. Instead, adjust the center distance or loosen the relevant tensioning device so that the belt can be installed without damage. After installation, the belt should have the tension that the machine is designed for, because both too loose and too tight a belt can cause problems.

If the belt drive uses multiple belts side by side, the belts should usually be replaced as a set. Belts of different ages or degrees of wear may have different lengths and stiffness, which can distribute the load unevenly. A uniform set provides better opportunity for smooth operation and less risk of one belt pulling more than the others.

The timing underside of the belt reduces the stiffness in bending and makes the design suitable for belt drives, where the belt must follow the pulleys without unnecessary energy loss. The raw-edge design provides direct side contact with the groove, and the polyester insert contributes to stable length under load. For the XPA 2632, the interaction between profile, length and pulley geometry is therefore central to smooth operation, correct tension and uniform wear over time.

Technical questions about XPA V-belts

What does XPA 2632 mean on this belt?

XPA is the profile designation and 2632 refers to the effective length Ld in millimeters. For this item, this means that the belt is specified as an XPA profile with dimensions 13x10 MM, Li 2587 mm, Ld 2632 mm and La 2650 mm.

What do Ld, Li and La mean on this V-belt?

Ld is the effective length and is the length stated in the product name. Li is the inside length, and La is the outside length. The three measurements are used to compare belts because manufacturers and older belt markings do not always use the same length designation.

Is the length alone enough to describe the belt?

No. The length is important, but the profile is at least as important. A belt with the correct length but the wrong profile can lie incorrectly in the pulley, causing poor contact, heat, noise and a shorter life.

Why is the belt timing on the inside?

The serration makes the belt more flexible around the pulley and helps with heat dissipation. This is especially relevant for compact belt drives, smaller pulleys and operations where a stiffer wrapped belt can become unnecessarily hot.

Is PIX X'tra® a regular wrapped V-belt?

No. The PIX X'tra® in this series is a moulded raw edge cogged belt. It differs from classic wrapped belts in construction, flexibility and working surface.

When should the belt be replaced?

The belt should be replaced if there are ctiming bars, obvious side surface wear, frayed edges, glazing, squealing, vibrations or repeated retensioning. The pulleys should also be in good condition, as a new belt will wear quickly in damaged grooves.

An incorrect belt specification reduces the risk of unnecessary stops, repeated replacements and troubleshooting after installation. The right combination of profile, length and construction provides better conditions for smooth running, reasonable service life and more stable power transmission in the current belt drive.

The essence: The key data for this XPA V-belt is: PIX X'tra® series, 13x10 MM, Ld 2632 mm, Li 2587 mm, La 2650 mm, timing underside and raw edge construction. It is relevant after overall match between belt, pulley and drive.