Conti Synchroflex ATP10 1400

Conti Synchroflex ATP10 1400 – precise high-performance timing belt for industrial drives

The Conti Synchroflex ATP10 1400 combines a precise ATP10 tooth geometry with a molded polyurethane body and longitudinally stable steel cord tension elements. The product has 140 teeth and a pitch length of 1400 mm, which corresponds to a tooth pitch of 10 mm. The belt is used in synchronous drives where uniform movement and reproducible position are more important than the elasticity normally associated with a conventional V-belt or flat belt. This is the standard version in the specified profile. It should not be confused with a possible GEN III version or a double-sided DL belt with the same pitch length.

Product data and fixed targets

• Pitch length: 1400 mm
• Number of teeth: 140
• Tooth profile: ATP10
• Tooth pitch: 10 mm
• Material: cast polyurethane with steel cord
• Brand: Conti Synchroflex

The technical data below describes the part of the product that does not change when a different belt width is selected. Pitch length, tooth pitch and number of teeth remain identical for all width choices. However, the width affects the available belt cross-section width and the price calculated on the product page. Correct sizing must always take into account torque, speed, number of teeth in mesh, pulley diameters, service factor and any counter-bending.

How tooth geometry works

The characteristic ATP tooth geometry distributes the load over two load-bearing areas instead of one traditional trapezoidal tooth peak. It is designed to improve force distribution and reduce local stresses in the tooth mesh. The profile should not be treated as a regular AT10 belt, even though both have a 10 mm tooth pitch; the tooth shape is different and the pulleys must match the selected profile.

How the Conti Synchroflex belt is constructed

Conti Synchroflex is manufactured by casting, where the polyurethane is precisely shaped to the tool's tooth geometry around the embedded steel cord tension elements. The casting process provides high pitch accuracy over the entire circumference of the belt and a strong connection between PU and cord. The finished timing belt is endless and therefore has no welded joints. The polyurethane provides a wear-resistant tooth and back surface, while the steel cord takes the longitudinal tensile load.

Standard, GEN III or DL ​​– this version

The product is the regular Conti Synchroflex standard version in the specified profile. Standard and GEN III may have the same pitch length and number of teeth, but they are different product series with different material construction and capacity data. The same applies to a DL belt, which has teeth on both sides. When reordering, the entire profile designation should therefore be checked, not just the length.

Areas of application

The application examples in the catalogue include machine tools, grinding machines, textile machines and power transmissions with high demands on the tooth load. This shows that the profile can be used in both power transmission and motion control. However, the specific belt must only be finally selected when the machine's torque, speed, center distance and pulley geometry are known. When simply replacing a spare part, the safest method is usually to copy the documented profile, length, design and width.

Operating conditions of PU timing belt

The standard material is specified for ambient temperatures from -30 °C to +80 °C. Applications close to the limits, especially below -10 °C or above +50 °C, may require special dimensioning. The timing belt operates without lubrication, and oil or grease should therefore not be added to dampen noise. The polyurethane is described as resistant to aging as well as simple oils, grease and petrol and to certain acids and bases. In the case of permanent contact, cleaning chemicals or unknown media, material compatibility should be specifically clarified.

Width selection and price calculation

The belt width is not written in the product name because the same pitch length is collected on one product page. The starting pu is 25 mm. Integer widths from 25 to 50 mm can be selected on this product page. The original supplier widths for this length are 25, 32 and 50 mm. Other intermediate sizes are offered as cut-to-sizes of the same type of timing belt sleeve when they are within the selection shown. The number of teeth, pitch length and profile do not change when the width is changed.

Timing belt pulleys and transmission ratios

The pulleys and belt should be considered as a single tooth engagement. Correct ATP10 geometry ensures that the load is distributed over the tooth flanks rather than concentrated on tooth tips or edges. The drive ratio is selected by the number of teeth on the pulleys, while the belt's 140 teeth and 1400 mm pitch length determine the required combination of pulleys and center distance. When changing the drive, the geometry should be calculated.

Splice, alignment and pre-tensioning

Proper installation begins with clean, undamaged pulleys with the correct profile. Teeth and grooves should be checked for deposits, bars and wear before the new belt is fitted. The pretension should be based on the drive's calculation and should not be selected based on a random hand feel. After the initial run-in, it is a good idea to check grooveing, noise, temperature and whether the belt runs centrally.

Wear patterns and troubleshooting

Uniform light polishing of the tooth flanks may be normal, but localised spalling, ctiming baring or severe wear should be investigated. Wear on one edge often indicates misalignment or persistent flange contact. Damage to tooth tips may be due to incorrect profile, foreign bodies or inadequate engagement. If cord becomes visible or the belt has a sharp break, it should not continue in service without assessment.

Before ordering a replacement

The product's 140 teeth provide a convenient length check. Multiplying the number of teeth by 10 mm gives a pitch length of 1400 mm. If an existing belt has a different number of teeth, it is not the same size, even though it may look almost the same length. Also check that the teeth on the pulleys match the ATP10; the same pitch number alone is not always sufficient.

Practical questions before ordering

Conti Synchroflex ATP10 1400: what does the pitch length of 1400 mm mean?

The pitch length is the nominal length measured in the belt cord line where the steel cord tension elements are located. It is not the same as a random outer circumference measurement. For this belt, 1400 mm pitch length corresponds to 140 teeth with a 10 mm tooth pitch.

Conti Synchroflex ATP10 1400: can the width be measured with a regular caliper?

Yes, the belt width can usually be measured directly on the flat back or between clean, undamaged edges. However, the width is only one part of the identification. The profile, pitch length, number of teeth and any DL or GEN III version must also be correct.

Conti Synchroflex ATP10 1400: can the belt be used for precise positioning?

The tooth engagement provides a positive, synchronous transmission without the normal slippage of a friction belt. This makes the profile relevant for positioning tasks, but the achievable accuracy also depends on the quality of the pulleys, shaft play, belt pretension, load and the overall machine design.

Conti Synchroflex ATP10 1400: can the belt be reversed on the pulleys?

The standard version is single-sided with teeth on the inside and a smooth back. It must run with the teeth in the corresponding tooth grooves; the back is not an alternative tooth side.

How many teeth does the Conti Synchroflex ATP10 1400 have?

The belt has 140 teeth. The number of teeth is calculated by dividing the pitch length of 1400 mm by the tooth pitch of 10 mm. The result is 140, and this number can be used as an additional check when identifying an existing belt. A different number of teeth means a different pitch length.

Conti Synchroflex ATP10 1400: what does the steel cord mean for the function of the belt?

The steel cord tension members absorb the longitudinal tensile load and provide high longitudinal stiffness. This helps maintain pitch and position during operation. The cord must not be kinked, exposed or damaged during installation, as local damage can weaken the belt.

Conti Synchroflex ATP10 1400: is the polyurethane oil and chemical resistant?

The standard PU is described as resistant to simple oils, grease and petrol as well as certain acids and bases. This does not mean universal chemical resistance. In the case of continuous contact, high concentrations or cleaning agents, the specific liquid, temperature and exposure time should be assessed.

Conti Synchroflex ATP10 1400: can an old V-belt be directly replaced by this timing belt?

No. A timing belt requires timing belt pulleys with the correct profile and pitch, while a V-belt works by friction in V-grooves. A conversion therefore requires new pulleys and a dimensioning of the entire transmission. The product is intended as a timing belt, not as a universal replacement.

Conclusion

In summary, this is a Conti Synchroflex PU timing belt with a fixed geometry of 10 mm pitch, 140 teeth and 1400 mm pitch length. The width is selected separately, but does not change the length or number of teeth. A safe replacement requires that the entire designation and the specific version match the machine documentation.