Light Hydraulic Breakers

Solid body reliability

The world's most reliable breaker...

The SB is the toughest, most reliable breaker on the market. This is because it's made from a solid one-piece body that doesn't need side bolts. The two largest breakers in the range have been upgraded and are also available in scaling versions.

Hydraulic breakers hit hard and get treated hard. With conventional breakers it's the side bolts that go first in most cases. So we eliminated the need for side bolts by casting the entire breaker body in a solid block of cast iron. The result is a much tougher breaker. A machine that can take the harsh and often careless treatment breakers are subjected to.

Stronger, lighter, more maneuverable

SB breakers are not only stronger, but they are also lighter than conventional units. Why? In conventional breakers the valve, cylinder, front head, and breaker housing are four separate components. But in a one-piece machine, they are integral parts of the same solid casting. By saving weight in this way, SBs provide the highest power-to-weight ratio on the market, giving you excellent maneuverability.

...just got more reliable

SBs might be the best, but we're continually working to make them better. The latest round of improvements has centered on the two largest breakers in the range, the SB 300 and SB 450. Now the accumulator is cast in the main body of the breaker. This means a more rugged machine, with even fewer parts and fewer problems. We've also added the option of a water channel for dust suppression. This gives operators a less hazardous working environment, improves visibility, and stops dust from seeping into the bushings. For jobs where there is even more dust, we've incorporated a channel for compressed air. This allows you to keep the area between the piston and tool free from dust. By feeding compressed air through the unit, you can also use SBs for breaking under water.

New scaling versions

Thanks to these improvements, we can now offer special scaling versions based on the SB 300 and SB 450 models. To withstand the extra demanding conditions of scaling operations, these versions include a number of additional features.

SB 300

Easy to service - An SB contains less than half as many parts as a conventional breaker.

Good visibility - The compact design makes it easy for operators to see what they are doing.

Patented tool retainer lock - The retainer locking system allows minimal play. The resilient lock pin simplifies tool replacement.

AEM-rated power - The piston design and long stroke movement give optimum energy transfer to the tip of the tool.

Forged and hardened - The nickel-chrome alloy tools are forged and hardened to provide an optimal balance of hardness and ductility.

Full-length tool bushing - Long tool bushing gives maximum guidance to the tool shank, which minimizes wear and tear.

Following on from the success of the TEX 250, we've developed scaling versions of the SB 300 and 450 breakers.

To start with we've optimized the stroke frequency and impact energy for scaling. Then we've cast the accumulator into the main body of the breaker, so that the unit can cope with scaling ceilings and walls. The breakers now have a channel for spraying water, to suppress dust and protect the bushings.

And by taking advantage of the air channel, you can use compressed air to protect the internal components from dust.

Last, but not least, you can fit one of the special scaling tools together with a shield and dust protector. This stops dust and debris from passing into the breaker.

Dust suppression - With an integrated water channel,
you can spray water to keep dust levels down.

Optimized for scaling - The stroke frequency has been increased and the impact energy has been decreased for scaling operations.

Air flushing - Feeding compressed air through the air channel helps protect internal parts from dust.

Bushing protection - A shield and dust protector on the scaling tool prevents debris from entering the breaker and damaging the internal parts.

Integrated accumulator - The accumulator has been cast into the main body of the breaker for a more robust design and incorporates the new charge valve, which is now flush with the accumulator cover for optimum protection.

Reduce downtime, increase lifetime

Tools, tool retainers, and bushings need to be lubricated at regular intervals. With our central lubrication system, grease is continuously pumped to the breaker.

This gives you two advantages: first, you eliminate downtime caused by lubrication stops; second, you protect your breaker because it's always being lubricated properly.

Grease that stays where you want it

When the shank of the tool gets hot, standard grease will melt and run off.

We make our own grease: it's rich in graphite and copper, which gives it high temperature stability for superior lubrication.

Central lubrication system:
12 V (including nipples)
or
24 V (including nipples)

Shank grease:
Grease gun cartridge 4.1 oz.
or
Grease container 37.5 lbs.

Hitting above their weight

The SB range consists of six models with an operating weight of 77 to 992 lbs.

They can be used on carriers weighing between 770 and 22,000 lbs.

But take a close look at the weight and impact figures of the different breakers:
because of their high power-to-weight ratio, you can often use a hard-hitting breaker on a smaller carrier without sacrificing stability.

Don't compromise

Poor quality tools can be a very expensive investment.

If you're unlucky, filings from low grade metal can shear off, enter the hydraulic system, and cause serious damage to the breaker and carrier.

Atlas Copco tools are made from a nickel-chrome alloy that has been optimized for breaking applications.

Each tool is precision formed and temper hardened for maximum wear resistance.

To extend service lifetime still further, the tool heads are forged rather than machine turned.