PAWL
Techno­logy

With its pawl hubs, DT Swiss offers a freewheel system that makes Swiss precision and attention to detail available at an affordable price.

  1. BEARINGS High end catridge bearings throughout. Low friction thanks to single sided seals. 2080 N load capacity per bearing.

  2. THREADRING Engages with the pawls, transfers torque to the hubshell 400 Nm torque tested.

  3. PAWLS Three hardened, high precision pawls engage with the thread ring. Hard and resistant pawl material.

  4. STEEL SECTION OF THE ROTOR Steel is used for this high stress component. 1000 N/mm2 tensile strength.

  5. ALLOY SECTION OF THE ROTOR To achieve an ideal strength to weight ratio, alu­minum is used for this lower stress component. 25 g alloy section only.

  6. PRESS FIT END CAPS Removable by hand for quick conversions and service. +/- 0.0XX MM press fit tolerances.

  7. ANNULAR SPRING Pushes the pawls outwards to engage with the thread ring. Tested to 13 standard lifecylces of a wheel.

  8. V-SEAL Precision low friction rotary v-seal. +/- 0.0XX MM seal seat precision.

PRECISION MEETS METICULOUS DEVELOPMENT PROCESSES

Each component of the pawl hubs has gone through a demanding development process and is constantly optimized. Two examples are the low-friction V-seal and the high-quality, easy-to-replace ball bearings, which are pressed into the hubshells with thousandth-of-a-millimeter precision. Similarly, the two-piece steel and aluminum freewheel body stands for the perfect combination of weight and strenght. As a single component it represents all the know how that makes the reputation of the term «Swiss engineering». All of DT Swiss' efforts serve one purpose – to build light, reliable hubs leading to less time in the workshop and more time in the saddle!

SPRING 25 % PRELOADED

The cyclist pedals, the pawl are fully engaged and transfer the power to the thread ring (and the hub/wheel). The annular spring is only slightly preloaded.

SPRING 50 % PRELOADED

The rider does not pedal, the pawls slide over the teeth. The preload of the annular spring increases.

SPRING 100 % PRELOADED

The rider does not pedal, the pawls are the highest point of the teeth. The preloading of the annular spring is at the maximum. The sequence begins anew and repeats thousands of times every kilometer.

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