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CDC-16 Tamping Device

CDC-16 tamping device is the core operating component of the turnout tamping vehicle, which operates in coordination with the hydraulic drive system, automatic control system and safety protection design. It supports two operation modes: double-sleeper tamping and single-sleeper adjustment, and can flexibly adapt to the tamping needs of lines with different densities of rail sleepers.
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CDC-16 Tamping Device



1. Adopting the operating principle of "three-line lifting and four-line tamping", it can simultaneously complete leveling, track lifting, track alignment correction and tamping operations. The maintenance time of a single set of turnouts is ≤35 minutes, and the efficiency is significantly better than the traditional manual labor or small machinery.


2. The tamping pick is inserted below the bottom surface of the sleeper to fully compact the ballast under the sleeper, effectively avoiding the problem of track settlement caused by shallow false ballast.




CDC-16 Tamping Device


3. Combined with the function of track lifting and track shifting, while tamping and compacting the ballast, the track's geometric parameters such as level, height, and direction are corrected in real time to reduce secondary disturbances to the ballast.


4. A single tamping operation can cover multiple sleepers, and 16 tamping picks work in coordination to ensure that the ballast density meets standard requirements.


5. The ballast treatment speed reaches 500m/h, which is suitable for large-scale line maintenance scenarios and can effectively reduce track possession window operation time.



"Three-Line Lifting, Four-Line Tamping" Operating Principle

The CDC-16 integrates four critical functions into one operation: leveling, track lifting, track alignment correction, and tamping. This "all-in-one" design eliminates the need for multiple passes with different equipment, slashing maintenance time and reducing disruptions to train schedules. For railway operators, this translates to lower downtime and higher network availability.


16 Coordinated Tamping Picks

Equipped with 16 high-strength tamping picks, the device ensures comprehensive ballast compaction across turnout sections. The picks work in unison to reach hard-to-access areas around turnout components (e.g., switch blades, frogs), guaranteeing that ballast density meets international railway standards. This design prevents uneven settlement in turnouts, a leading cause of derailment risks.


High-Speed Ballast Treatment

With a ballast treatment speed of 500m/h, the CDC-16 is optimized for large-scale line maintenance. It efficiently covers extensive turnout networks, making it ideal for regional and national railway operators managing hundreds of switches.


Deep Tamping to Prevent Settlement

Like premium tamping devices, the CDC-16’s picks insert below the sleeper’s bottom surface to compact ballast at depth. This avoids "shallow false ballast" and ensures long-term turnout stability, reducing the frequency of emergency repairs.



The CDC-16 Tamping Device is the key operating component of turnout tamping vehicles, specifically engineered to address the unique maintenance needs of railway turnouts (switches)—critical but complex track sections that require frequent upkeep. It works in synergy with a hydraulic drive system, automatic control system, and safety protection design to deliver efficient, precise tamping. Supporting both double-sleeper tamping and single-sleeper adjustment modes, the CDC-16 adapts to varying sleeper densities in turnouts, ensuring uniform ballast compaction. Its standout advantage lies in reducing turnout maintenance time to ≤35 minutes per set—far outperforming manual labor or small-scale machinery—and minimizing track possession window time, a top priority for busy railway networks.


Ration frequency 35Hz
Tamping depth not less than 580mm below the top of the rail
Minimum Negotiable Curve Radius 180m
Operating Temperature Range -10℃~+40℃
Applicable track gauge Supports customized adaptation. We can provide customized product services according to your needs.



CDC-16 Tamping Device CDC-16 Tamping Device CDC-16 Tamping Device



CDC-16 Tamping Device


Specific usage scenarios:

Tamping operation of new railway track bed.

CDC-16 Tamping Device


Specific usage scenarios:

Improve the ballast density during periodic maintenance, defect repair and overhaul of existing lines.



New Turnout Installation: Compacts ballast during the construction of new switches, ensuring they meet operational standards from day one.

Existing Turnout Maintenance: Enhances ballast density during periodic checks, defect repairs (e.g., loose ballast around frogs), and overhauls of aging turnouts.

Large-Scale Network Upgrades: Ideal for railway operators upgrading their turnout networks, as it speeds up maintenance and minimizes service disruptions.


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