Conti SilentSync B-2240

Conti SilentSync B-2240 – belt for quiet and maintenance-free timing belt drive

Conti SilentSync B-2240 is a Continental SilentSync belt for precise belt drives, where the profile, width, length and number of teeth of the timing belt must match the pulley exactly. The product has a working length of 2240mm, 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 2240mm and the width of 35mm are key measurements for the belt geometry and its engagement with the pulley. The number of teeth is 160, 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-2240
• SKU: B2240
• Profile: HOT 14M
• Tooth pitch: 14 mm
• Working length / pitch length: 2240mm
• Number of teeth: 160
• 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.

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.

Use for this CONTI® SilentSync timing belt

SilentSync is relevant when a belt drive needs to operate more quietly than many traditional timing belt drives while maintaining precise timing. This length and width make the belt relevant for drives with larger pulleybases and higher loads, where stable engagement with the pulley is important. However, the final suitability always depends on the pulley, pulleybase, load, speed and machine design. 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.

Profile, length and width in this variant

The Conti SilentSync B-2240 is built around HOT 14M-profile with a tooth pitch of 14 mmThe working length is 2240mm, the belt width is 35mm, and the belt has 160 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, 2240mm, 35mm and 160 teeth belong together in this specific variant.

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 temperature range is application-dependent from -30 °C to +130 °C.
• May be relevant as an alternative to chain or other belt drives when cleaner and quieter operation is desired.
• The timing belt works synchronously and helps with precise power transmission without slippage.
• The HOT profile is designed to reduce noise and vibrations in the belt drive.
• The belt is ozone and aging resistant.
• Limited oil resistance may be an advantage in certain technical environments, but the belt is not intended as a chemical-resistant solution.

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.

Questions about properties and use

Why is SilentSync quiet?

HOT stands for Helical Offset Tooth. The offset/helical tooth shape provides a smoother engagement in the pulley and is designed for lower noise and vibration.

What does antistatic mean according to ISO 9563?

This means that the belt is designed to meet the requirements for antistatic properties according to ISO 9563 when used correctly and under suitable conditions.

Does the timing belt need to be lubricated?

No. A SilentSync timing belt is maintenance-free as a belt type and does not need to be lubricated like a chain. The pulley and belt must be kept clean and correctly aligned.

What does working length mean?

The working length is the synchronous pitch length of the belt. For this variant, the working length is 2240mm, and together with the tooth pitch on 14 mm gives it 160 teeth.

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.

Relationship between profile, length and width

The Conti SilentSync B-2240 is defined by four key goals: HOT 14M-profile, 2240mm working length, 35mm belt width and 160 teeth. This data determines the geometry of the belt and its engagement with the associated pulleys.

The letter in the name indicates the width/color code, while the number indicates the working length in millimeters. The technical structure makes it possible to distinguish between belts that are similar at first glance, but have different widths, profiles or tooth pitches. In the SilentSync system, these differences have a direct impact on operation, load and belt travel.

Brief summary

Conti SilentSync B-2240 is an endless CONTI® SilentSync timing belt with HOT 14M-profile, working length 2240mm, belt width 35mm and 160 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.