V-belt XPB 1200 - 17x14MM - PIX X'tra ®

V-belt XPB 1200 - 17x14 MM - PIX X'tra ® – correct profile, length and PIX X'tra® construction

V-belt XPB 1200 - 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 1200 mm, inside length L 1140 mm and external length Width 1228 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 1200 mm
• Inner length: L 1140 mm
• External length: Width 1228 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 1200 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 1200 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 1200 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

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 more powerful belt drives, where the motor, pu , fan, compressor or process machine requires a wider contact surface. 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, the pulley profile and the three length measurements.

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 1200 mm, L 1140 mm, Width 1228 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.

As part of the PIX X'tra® series, the belt is designed for industrial belt drives where stable friction, flexibility and length stability must work together. The specified profile angle, the three length dimensions and the timing underside describe different sides of the same construction. For the XPB 1200, this results in a belt that is technically defined by both cross-section and effective length, not just by the nominal length in the product name.

Li 1140 mm, Ld 1200 mm and La 1228 mm describe three different measurement lines on the same belt. The difference between the measurements is due to the thickness and geometry of the belt, and therefore they should be seen as technical specifications rather than interchangeable length indications.

Technical questions about XPB V-belts

What does XPB 1200 mean on this belt?

XPB is the profile designation and 1200 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 1140 mm, Ld 1200 mm and La 1228 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 XPB V-belt is: PIX X'tra® series, 17x14 MM, Ld 1200 mm, Li 1140 mm, La 1228 mm, timing underside and raw edge construction. It is relevant after overall match between belt, pulley and drive.