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TORQUE-FLEX - Classical

Raw-edge moulded-cog classical V-belts engineered for flexible high-performance industrial drives.

TORQUE-FLEX - Classical

Raw-edge moulded-cog classical V-belts engineered for flexible high-performance industrial drives.

TORQUE-FLEX - Classical is a belt-drive product line presented for engineering-led selection and industrial procurement through MECHATRIC. This page explains its manufacturer-stated characteristics, selection inputs and replacement review criteria. Product availability and suitability require confirmation.

SIT TORQUE-FLEX raw-edge cogged classical V-belt

Technical Specifications from SIT

AttributeManufacturer information
Product familyTORQUE-FLEX - Classical
ProfilesZX, AX, BX, CX
Construction / operating dataPolyester cord; fiber-loaded chloroprene compound; -20 to +70 C; good oil-contamination resistance; antistatic according to ISO 1813; Matchmaker restricted tolerances.
Published rangeZX: 375-2500; AX: 407-3000; BX: 570-3000; CX: 1060-3000 (manufacturer range figures).
Ordering / RFQ exampleCT AX 40

Profile Dimensions & Manufacturer Highlights

  • High-performance raw-edge moulded-cog belt
  • Enhanced abrasion resistance; excellent price / performance ratio
  • Set free: restricted dimensions and tolerances acc. to the Matchmaker system - no matching of sets required
  • Fibre-loaded chloroprene compound; -20...+70 °C; good oil resistance; antistatic acc. to ISO 1813

TORQUE-FLEX - classical cogged profiles

ProfileTop width a (mm)Height b (mm)Published length range
ZX106375-2500
AX138407-3000
BX1711570-3000
CX22141060-3000

Length range as published by SIT; confirm the length convention (nominal / internal / effective) for each order. Ordering example CT AX 40 = internal length in inches.

Source: SIT Drive Solutions, Belt Drives Offering - Range, May 27, 2023. Source specifications are historical and should be reconfirmed against current manufacturer literature.

Brand Comparison - Equivalent Series

Performance raw-edge cogged belts

TierSITGatesOptibeltMegadyneContitech
Performance (classical X)TORQUE-FLEXTRI-POWERSUPER TX-CONTI V-FO
Performance (narrow XP)TORQUE-FLEXSUPER HC MNSUPER X-POWERLINEA XCONTI V-FO

Market positioning as published by SIT Drive Solutions (Belt Drives Offering - Range, May 27, 2023) - for orientation when comparing offers. A listed series is not automatically a direct interchange: confirm section, length designation, power rating and operating limits before replacement. Gates, Optibelt, Megadyne and Contitech are registered trademarks of their respective owners.

Applications and Operating Context

Compact power transmission, pumps, compressors, fans and machinery where cogged-belt flexibility is valuable.

How to Select the Correct Belt

  1. Identify the existing pulley groove standard and belt section.
  2. Record motor power, rotational speeds, pulley diameters, center distance and duty cycle.
  3. Determine required belt length and the manufacturer length designation.
  4. Calculate design power with the appropriate service factor and check manufacturer belt power ratings.
  5. Verify number of belts, belt speed, wrap angle, allowable tension, shaft loads, installation clearance and environmental conditions.
  6. Validate the final selection against current manufacturer tables.

Replacement / Interchange Engineering

Confirm classical cogged groove and length designation; evaluate minimum pulley diameter, flex fatigue and matched sets.

A similar-looking belt or a competitor series listed in a market comparison is not automatically a direct interchange. Verify profile geometry, length convention, power capacity, material, temperature, antistatic requirement and drive compatibility.

RFQ Information Required

Belt brand / series and full marking; cross-section; nominal / effective / inside length convention; quantity; number of ribs if banded; pulley groove dimensions; driver power and RPM; driven RPM; operating hours; ambient temperature; contamination; machine application; and photographs of the belt and sheaves.

Need TORQUE-FLEX - Classical belts?

Share the complete belt marking and machine duty data with MECHATRIC.

Source: SIT Drive Solutions, Belt Drives Offering - Range, May 27, 2023, pages 12, 8, 9, 10. Source specifications are historical and should be reconfirmed against current manufacturer literature. Application examples and selection methodology are engineering guidance, not claims from the source.

Frequently Asked Questions

Which sections are covered?

ZX, AX, BX, CX.

Can I replace another belt brand directly?

Only after confirming section, length designation, pulley fit, power capacity and operating limits.

How do I request a quote?

Share the complete belt marking and machine duty data with MECHATRIC.

Ask an Engineer Request a Quote