V-belt XPB 1320 - 17x14MM - PIX X'tra ®

V-belt XPB 1320 - 17x14 MM - PIX X'tra ® – PIX X'tra® narrow V-belt for stable power transmission

V-belt XPB 1320 - 17x14 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 XPB, goal 17x14MM, effective length Width 1320 mm, inside length L 1260 mm and external length Width 1348 mm.

XPB is a heavier timing narrow V-belt, often used when more power needs to be transmitted than in the smaller XPZ and XPA profiles. It should be used in pulleys that fit XPB and 17x14MMA 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: XPB
• Goal: 17x14MM
• Effective length: Width 1320 mm
• Inner length: L 1260 mm
• External length: Width 1348 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 XPB 1320 should not be confused with another profile of the same nominal length. Therefore, consider both Li, Ld and La along 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 1320 mm, the belt is in a common working range for many machines. Here, it is typically not only the length, but also the condition of the pulleys, center distance and correct tension that determine whether the belt drive runs stably over time.

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 XPB profile, the PIX data sheet states the length range is 550–8380 mm. This belt with Ld 1320 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 XPB profile

The operating situation has a great impact on the belt's lifespan: is the belt running constantly, are there many starts/stops, is the load even, and are the pulleys clean and in good condition? This XPB belt is designed for mechanical power transmission, but lifespan and operation still depend on alignment, tension, temperature, pulley quality, and whether the belt is installed without damage.

This XPB belt is relevant in medium and heavier applications where an XPZ or XPA profile does not provide sufficient bearing surface for the current belt drive. In operation, the pulley groove, the belt cross-section and the timing construction are important for the contact between the belt and pulley. Profile and length must match, as the correct length does not compensate for an incorrect cross-section.

Profile and pulley compatibility

XPB belongs to the same narrow profile family as SPB, 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 XPB, 17x14MM, Width 1320 mm, L 1260 mm, Width 1348 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 XPB profile with the dimensions 17x14 MM is part of the narrow Cogged V-belts, where the fit of the side surfaces in the pulley groove is crucial for the power transmission. Ld 1320 mm describes the effective length, while Li 1260 mm and La 1348 mm describe the inner and outer measurement line of the belt. Together, the dimensions give a more precise picture of the belt geometry than the length alone. The technical structure is therefore relevant in both new and established belt drives.

For the XPB 1320, a clean and smooth contact between the belt and pulley is an essential part of the overall function. The belt path should be free of oil, sharp edges and accumulated belt dust, as these conditions can affect friction, temperature and wear pattern.

Technical questions about XPB V-belts

What does XPB 1320 mean on this belt?

XPB is the profile designation and 1320 refers to the effective length Ld in millimeters. For this item, this means that the belt is specified as XPB profile with dimensions 17x14 MM, Li 1260 mm, Ld 1320 mm and La 1348 mm.

Why does a new V-belt get hot?

Heat is often caused by incorrect tension, misaligned pulleys, worn grooves, excessive load or incorrect profile. A correctly specified belt can still have a short life if the belt drive is not adjusted correctly.

Is external length the same as effective length?

No. La is the external length, while Ld is the effective length. They must not be mixed up because the difference may be enough to prevent the belt from being tensioned correctly.

What conditions affect the operation of the belt?

Profile, dimensions, Ld, Li, La, pulley groove, number of belts in the drive and machine operation all affect the load on the belt. When these conditions match, the belt works more stably and has a longer service life.

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.

When making technical comparisons, length, profile, cross-section and the product's Li, Ld and La should be viewed together. This makes the difference between internal, effective and external length clear and reduces the risk of confusion between adjacent belt sizes.

The essence: The key data for this XPB V-belt is: PIX X'tra® series, 17x14 MM, Ld 1320 mm, Li 1260 mm, La 1348 mm, timing underside and raw edge construction. It is relevant after overall match between belt, pulley and drive.