Conti SilentSync B-1120

Conti SilentSync B-1120 – belt for quiet and maintenance-free timing belt drive

Conti SilentSync B-1120 is a timing belt for industrial drives, where the HOT tooth shape helps the belt to run stably and self-centering in the correct SilentSync pulley. The product has a working length of 1120mm, latitude code B and a belt width of 35mmThe belt is an endless, self-aligning SilentSync belt, where the HOT tooth shape provides a gradual tooth engagement and contributes to stable belt movement in suitable drives.

SilentSync differs from many common timing belts in that it has a self-aligning HOT tooth shape. This makes the product family particularly relevant in drives where noise, vibration and stable belt movement are of great importance. The variant's data is particularly relevant in belt drives where smooth operation, precise timing and uniform power transmission are important.

Technical data for this SilentSync timing belt

This variant is a 14M belt with HOT tooth shape. The length of 1120mm and the width of 35mm are key measurements for the belt geometry and its engagement with the pulley. The number of teeth is 80, calculated from the working length and tooth pitch of 14 mm. The number of teeth and tooth pitch determine the synchronous engagement of the belt in the pulley.

• Product: Conti SilentSync B-1120
• SKU: B1120
• Profile: HOT 14M
• Tooth pitch: 14 mm
• Working length / pitch length: 1120mm
• Number of teeth: 80
• Belt width: 35mm
• Color/width code: B (blue)
• Belt thickness: 9.1mm
• Tooth height: 5.30mm
• Pitch height / effective line distance: 1.40mm
• Belt type: endless, self-aligning timing belt
• Features: very quiet, low-vibration, antistatic, ozone and aging resistant
• Temperature range: depending on the application from -30 °C to +130 °C

The width code in the product name is not accidental. The SilentSync series uses letter codes, where Y, W and P belong to the 8M widths, while B, G, O and R belong to the 14M widths. This structure links letter code, length, tooth pitch and width together in the product logic of the SilentSync system.

Profile, length and width in this variant

The Conti SilentSync B-1120 is built around HOT 14M-profile with a tooth pitch of 14 mmThe working length is 1120mm, the belt width is 35mm, and the belt has 80 teeth. The combination of profile, tooth pitch, length and width determines how the belt engages with the associated SilentSync/Eagle pulleys.

The latitude code B (blue) is part of the SilentSync system design and links the belt width to a specific color and letter code. In a properly designed drive, the belt's HOT tooth shape works together with the pulley profile to ensure gradual and stable tooth engagement. This is especially important in synchronous belt drives where the belt must maintain a precise relationship between the motor and the driven shaft without slippage.

The endless construction provides a uniform belt without joints, and the self-guiding geometry contributes to smooth belt movement in suitable installations. The technical dimensions of the belt should therefore be seen as an overall specification: HOT 14M, 1120mm, 35mm and 80 teeth belong together in this specific variant.

Use for this CONTI® SilentSync timing belt

The product is suitable for belt drives requiring a timing belt with low noise, low vibration and self-aligning belt travel in a correctly dimensioned drive. This length and width make the belt relevant for more powerful drives with a relatively compact structure and a need for a coarser tooth pitch. However, the final suitability always depends on the pulley, pulleybase, load, speed and the design of the machine. SilentSync is suitable for horizontal drives where the self-centering function, low noise level and low-vibration operation are relevant properties.

SilentSync may visually resemble other timing belts, but the HOT profile distinguishes it from regular HTD and standard profiles. The difference is that SilentSync uses the HOT profile, which is made for SilentSync/Eagle pulleys. Length and width therefore do not describe the entire compatibility alone. The profile must also fit the pulley, the profile has an impact on belt travel, noise level, wear and power transmission.

Benefits of HOT profile and SilentSync technology

SilentSync is designed to make synchronous belt drives quieter and less vibrating. HOT stands for Helical Offset Tooth, and the tooth shape provides a smoother engagement with the pulley. When the belt and pulley are properly matched, this tooth shape can help reduce belt travel and provide smoother operation than many straight timing belt drives.

• The synchronous tooth profile means that the belt maintains the relationship between the motor and the driven shaft.
• Aramid reinforced construction is relevant in drives with requirements for stable power transmission.
• The belt is designed for quiet and low-vibration operation.
• The profile and width code makes it easier to identify the correct variant.
• Continental SilentSync is intended for timing belt pulleys that fit the HOT profile.
• The belt is self-centering and can therefore help reduce belt movement problems in suitable drives.

This does not mean that the belt alone can solve all problems in a drive. If the pulleys are worn, the shafts are misaligned, or the tension is incorrect, noise, heat, or wear can still occur. However, in a properly constructed SilentSync drive, this type of belt is a strong solution when low noise levels, precise timing, and maintenance-free operation are important factors.

Installation and operation of the belt drive

When installing, the pulleys must be clean, properly aligned and designed for the SilentSync/HOT profile. A new timing belt cannot compensate for worn pulleys or misalignment. The belt tension must also be correct. Too low a tension can cause tooth skipping or unstable operation, while too high a tension can strain the bearings, shafts and the belt itself.

The SilentSync belt is maintenance-free as a belt type and does not require lubrication. This is one of the advantages compared to chain drives, where lubrication is often part of the maintenance. However, this does not mean that the drive can be ignored. Check regularly for noise, vibration, uneven running, rubber dust, heat or visible wear. These signs may indicate that the belt drive is not working optimally.

Operation, noise and lifespan

SilentSync is particularly interesting in machines where noise and vibrations are important for the working environment, precision or operational reliability. The belt has very quiet and low-vibration operation, and the HOT tooth shape is central to the smooth running of the belt drive.

The service life depends on the entire belt drive. The right belt, the right pulleys, the right tension and good alignment are essential. If the belt wears out quickly, the cause should be found in the entire system: load, pulleys, tension, environment and possible contamination. Replacing the belt itself will not necessarily solve an incorrectly sized drive.

Questions about properties and use

What does the number of teeth mean?

The number of teeth indicates how many tooth engagements the belt has over its entire length. It can be calculated as the working length divided by the tooth pitch.

What is the difference between length and width?

The length indicates the working length/pitch length of the belt, while the width is the physical width of the belt across. Both parts must fit the drive.

Can SilentSync reduce vibrations?

Yes. SilentSync is vibration-free. However, how big the difference will be in practice depends on the entire drive structure.

What affects the operation of the belt?

The operation of the belt is affected by the profile of the pulleys, the alignment of the shafts, the belt tension, the load, the speed and the environment around the drive.

Relationship between belt and pulley

In a synchronous timing belt drive, the belt and pulley work as one system. The tooth shape, tooth pitch and belt width have an impact on how the load is distributed in the engagement. For this variant, this means that HOT 14M-profile, tooth pitch on 14 mm, the working length of 1120mm and the belt width on 35mm must be viewed together.

The HOT geometry is designed to have a more gradual tooth engagement than a traditional straight tooth shape. This can provide a smoother transition between belt and pulley, which is a key part of the SilentSync concept’s low noise and vibration levels. The belt’s properties are best utilized when the belt drive is properly aligned and the load is within the drive’s design.

Brief summary

Conti SilentSync B-1120 is an endless CONTI® SilentSync timing belt with HOT 14M-profile, working length 1120mm, belt width 35mm and 80 teeth. The belt is developed for synchronous drives, where low noise levels, stable belt movement and precise power transmission are important features.

The self-aligning HOT tooth shape, the antistatic design and the maintenance-free belt construction make the variant suitable for industrial belt drives with requirements for quiet operation. The product must be used in conjunction with pulleys that match the SilentSync/Eagle profile and the specified tooth pitch.