Reverse Drive Double Sided Timing Belts Custom

Reverse Drive Series

Reverse Drive
Double Sided Timing Belts

Engineered specifically around the mechanical demands of reverse-rotation drive layouts, where a belt segment repeatedly bends in both directions around a reversing idler.

ISO 9001 DIN 7721 RMA IP-24
RD-T10-1700

Purpose-Built for Counter-Rotation Layouts
Temperature Range -20°C ~ +100°C

Pitch: T10 (10mm) · Width: 25mm

Reverse Drive Double Sided Timing Belts — Engineered for Excellence

Our reverse drive double sided timing belts are engineered around a specific mechanical reality of counter-rotation layouts: the belt segment that wraps a reversing idler bends in the opposite curvature direction from the rest of the loop, subjecting that section to a distinct fatigue pattern most standard double-sided belts aren't specifically optimized for. This series focuses tooth and compound design on surviving that reverse-bend cycle reliably over the long term.

Material & Construction

The belt compound is formulated with enhanced reverse-flex fatigue resistance, and tooth root geometry on both faces is optimized to reduce stress concentration specifically at the point where curvature direction changes across the reversing idler contact zone. Tension cords (steel or fiberglass depending on load) are selected and positioned for balanced fatigue performance under this bidirectional bending pattern.

Design & Performance

A conventional belt design optimized purely for one-directional wrap can develop premature fatigue cracking at the reversing idler contact zone, where the belt curvature briefly inverts; this series' compound and tooth-root geometry are specifically validated under repeated reverse-bend cycling on a dedicated fatigue test rig that replicates true reversing-idler geometry, not just standard single-direction flex testing.

Manufacturing Excellence

Production includes reverse-bend fatigue testing on a rig configured to replicate actual reversing-idler wrap geometry and cycle rate, with belts required to meet a minimum reverse-cycle life threshold before the compound formulation is approved for this product line.

Customization & Flexibility

Available in T5, T10, and T20 pitch, engineered around your specific reversing idler diameter, since tighter reversing radii impose more severe fatigue demands than larger ones. Our team will size the belt and recommend minimum reversing idler diameter for your target service life.

Applications Across Industries

Our reverse drive double sided timing belts are deployed in:

  • Reversing Conveyor Systems – belts requiring periodic direction reversal.
  • Textile Machinery – counter-rotating roller and let-off drives.
  • Sorting Equipment – reverse-drive diverter and sorting mechanisms.
  • Packaging Machinery – reversing feed and indexing drives.
  • Printing Equipment – counter-rotating cylinder drives.
  • General Industrial Automation – any layout with a reversing idler in the belt path.

A belt that lasts in a standard wrap doesn't automatically last through a reversing idler — this series is built and tested specifically for the fatigue pattern that reverse-rotation layouts actually create. Built for the bend that breaks other belts.

Built for Performance

Every belt is designed to deliver exceptional durability, precision, and efficiency across a wide range of reverse drive double sided timing belts applications.

01

Reverse-Flex Fatigue Compound

Formulated specifically to withstand bidirectional bending cycles.

02

Optimized Reversing-Zone Tooth Root

Reduced stress concentration at the point of curvature inversion.

03

Reversing-Idler-Specific Testing

Fatigue validated on a rig replicating actual reversing geometry.

04

Diameter-Matched Engineering

Sized to your specific reversing idler radius for target service life.

Core Technical Advantages

Beyond standard specifications, our belts incorporate engineering innovations that deliver superior performance.

Enhanced Reverse-Flex Compound

Formulation specifically screened for bidirectional bending fatigue resistance.

Reversing-Zone Tooth Root Optimization

Geometry reduces stress concentration where curvature direction inverts.

Dedicated Reverse-Bend Fatigue Rig

Testing replicates true reversing-idler wrap geometry, not generic flex testing.

Idler-Diameter Sizing Guidance

Belt and idler diameter matched together for a target service life.

Technical Specifications

Standard and heavy-duty series — select the right belt for your drive system.

ModelPitch TypeWidth (mm)Tensile MemberMin. Reversing Idler Dia (mm)Temp. Range
RD-T5-1000T516Fiberglass30-20 ~ +90
RD-T10-1300 PopularT1020Fiberglass45-20 ~ +95
RD-T10-1700 PopularT1025Steel50-20 ~ +100
RD-T10-2100 HeavyT1032Steel55-20 ~ +100
RD-T20-2800T2040Steel80-15 ~ +100

* Minimum reversing idler diameter listed for rated reverse-cycle fatigue life.

Performance Data

Visual insights into load capacity, precision, and operating characteristics.

Maximum Load Capacity (N)

RD-T5-1000
1,700
RD-T10-1300
3,800
RD-T10-1700
5,200
RD-T10-2100
6,700
RD-T20-2800
10,600
* Ratings apply at listed minimum reversing idler diameter

Reverse-Bend Fatigue Life vs. Idler Diameter

100%
80mm
82%
55mm
64%
45mm
40%
30mm
Relative reverse-cycle fatigue life at decreasing reversing idler diameter

Reverse Drive vs. Standard Belt at Reversing Idler

100%
Reverse Drive Series
38%
Standard Double-Sided
Relative fatigue life specifically at the reversing idler contact zone

Load vs. Belt Width (RD-T10)

20mm
3,800
25mm
5,200
32mm
6,700
40mm
7,000
Maximum load (N) at 25°C ambient, T10 pitch
Ningbo GUL TZ Rubber Belt Co., Ltd.

About Us

The company is China Reverse Drive Double Sided Timing Belts Manufacturers and Wholesale Reverse Drive Double Sided Timing Belts Factory, and was established in 1992, specializing in the production of rubber timing belts, V-ribbed belts, open belts and timing pulleys. The company now has the factory covering an area of 32,000 square meters , with an annual output of 120 million pieces and an output value of 200 million yuan. The company is a national high-tech enterprise, the drafting unit of national standards and industry standards, and has passed ISO9001, ISO14001 and ISO45001 system certification.

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  • 1992

    Company was established in

  • 32000

    Factory covers an area(㎡)

  • 6000+

    Number of Molds

  • 120 Million

    Annual production capacity

Why Choose Us

Decades of engineering excellence in power transmission.

  • In-house R&D with 40+ years of belt technology expertise
  • Strict quality control — every belt tested to ISO standards
  • Custom solutions: length, width, and material options
  • Global supply chain with fast lead times
98.6%

Field reliability rate

Based on 5-year performance data across 12,000+ installations worldwide.

40+ Years
80+ Countries
500+ Partners

Key Applications

Trusted by engineers across industries for reliable, maintenance-free power transmission.

Reversing Conveyor Systems

belts requiring periodic direction reversal

Textile Machinery

counter-rotating roller and let-off drives

Sorting Equipment

reverse-drive diverter and sorting mechanisms

Packaging Machinery

reversing feed and indexing drives

Printing Equipment

counter-rotating cylinder drives

General Industrial Automation

any layout with a reversing idler in the belt path

Product Application What We Offer

Industry Case Studies

Real-world applications demonstrating the reliability and performance of our belts.

Reversing Sortation Conveyor

RD-T10-1700 · Steel reinforced

Eliminated premature cracking at the reversing idler that had caused repeated failures with a standard double-sided belt.

+180% reverse-cycle service life

Textile Let-Off Reversing Drive

RD-T5-1000 · Fiberglass cord

Withstood continuous direction reversal in a textile let-off mechanism running three shifts.

14M+ reversal cycles

Packaging Reversing Feed Drive

RD-T10-1300 · Fiberglass cord

Resolved recurring belt fatigue failures at a tight-radius reversing idler in a packaging feed system.

Zero failures in 12 months

Heavy Diverter Mechanism

RD-T20-2800 · Steel reinforced

Delivered reliable reverse-drive service in a high-load sortation diverter operating continuously.

10,600N rated at 80mm idler

Quality & Certifications

Our commitment to quality is backed by internationally recognized standards and rigorous in-house testing.

ISO 9001:2015Quality Management
DIN 7721T-Series Pitch Standard
RMA IP-24Timing Belt Test Method
RoHSRestriction of Hazardous Substances
REACHChemical Compliance
ISO9001, ISO14001 and ISO45001 Certification

Our Certificate

Intellectual Property Certificate
Certificate of integration of industrialization and industrialization
National Product and Service Quality Integrity Demonstration Enterprise
National quality inspection stable qualified products
National rubber transmission belt industry quality brand
Zhejiang Province Credit Management Demonstration Enterprise
International Standard Machinery Industry Third Prize
ISO9001 System Certification
ISO45001 System Certification
ISO14001 System Certification
Second prize
Industry advanced

Custom Solutions

We offer tailored belts to meet your unique application requirements. Contact our engineering team for a quote.

Full T-Series Pitch Range

T5, T10, and T20 available

Idler-Diameter Sizing Service

Matched to your reversing geometry

Custom Widths

16mm up to 50mm

Tensile Member Choice

Fiberglass or steel cord

Custom Lengths

300mm to 10,000mm

Fatigue Test Data

Reverse-cycle test results available

Installation & Maintenance Tips

Proper installation and routine maintenance maximize belt life and drive reliability.

Installation Best Practices

  • Provide your actual reversing idler diameter when ordering to confirm correct belt sizing.
  • Verify the reversing idler diameter meets or exceeds the belt's minimum rating before installation.
  • Align all pulleys, including the reversing idler, precisely along the drive centerline.
  • Set tension per T-series charts; reverse-drive layouts are not more tension-tolerant than standard layouts.
  • Inspect the reversing idler surface for wear or damage that could accelerate belt fatigue.

Maintenance & Inspection

  • Inspect the belt section that contacts the reversing idler more frequently than the rest of the loop.
  • Watch for early-stage fatigue cracking specifically at the reversing contact zone.
  • Re-verify tension periodically per standard T-series maintenance guidance.
  • Keep the reversing idler and belt surface clean of debris that could accelerate wear.
  • Replace proactively if any cracking is visible at the reversing zone rather than waiting for failure.

Frequently Asked Questions

Find answers to the most common questions about our reverse drive double sided timing belts.

1. Why do standard double-sided belts fail at reversing idlers?+
The belt segment wrapping a reversing idler bends in the opposite curvature direction from the rest of the loop, creating a distinct fatigue pattern that belts optimized only for one-directional wrap aren't specifically designed to withstand.
2. How is this belt different from a standard double-sided belt?+
It uses a compound formulated for reverse-flex fatigue resistance and tooth-root geometry optimized specifically for the reversing contact zone, validated on a dedicated reverse-bend fatigue rig.
3. What is the minimum reversing idler diameter I should use?+
Ranges from 30mm to 80mm depending on model; using a smaller diameter than rated will reduce fatigue life below the rated specification.
4. How much longer do these belts last at a reversing idler compared to standard belts?+
In testing and field applications, reverse-cycle fatigue life improvements of over 150% compared to standard double-sided belts are typical.
5. Can you help size a belt for my specific reversing idler diameter?+
Yes, our team will confirm belt model and recommend minimum idler diameter based on your target service life.
6. What pitch sizes are available?+
T5, T10, and T20, covering light reversing drives through heavier-duty industrial sortation and diverter mechanisms.
7. What tension member options are available?+
Fiberglass cord for lighter reversing drives and steel wire for higher-load applications.
8. Is this belt also suitable for standard non-reversing serpentine layouts?+
Yes, though the reverse-flex optimization is specifically valuable when a reversing idler is present in the drive path.
9. How is reverse-bend fatigue life tested?+
On a dedicated fatigue rig configured to replicate actual reversing-idler wrap geometry and cycle rate, not generic single-direction flex testing.
10. What is the typical service life in a reversing application?+
Highly dependent on idler diameter and cycle rate; our sizing service will provide an estimate for your specific configuration.
11. What are typical lead times?+
Standard models ship in 5-7 business days; idler-diameter-optimized custom belts require 15-20 working days.
12. Can I get reverse-cycle fatigue test data for my application?+
Yes, test data specific to your model and idler diameter can be provided on request.

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