A datasheet makes it tempting to choose clay diggers by one figure, as if the lightest tool were the easiest to handle and the highest blow rate the fastest. Neither shortcut is reliable. A tool that looks right on paper can still fall short if the site compressor cannot supply its airflow, the chisels in stock do not fit its shank, or it cannot work in the position the task demands.
Sound pneumatic tool selection starts with the job. When assessing a heavy duty clay digger requirement, buyers should check the documented application range before comparing individual specifications.
Clay diggers are handheld construction air tools that work by pneumatic percussion. ACE Pneumatics describes them as light tools for renovation, construction, rock breaking and tunnelling work.
These tools are also called clay and trench diggers, pick hammers, utility hammers and handheld pneumatic clay diggers. Inside each one, compressed air drives a piston that strikes a chisel held in the front of the tool.
A specification sheet describes four separate aspects of the tool:
These figures support equipment comparison; they do not establish a tested material-removal rate.
The ACE CD222 and ACE CD FL 22 differ in weight, length, blow rate, stroke, air consumption and shank type, while sharing the same piston diameter, pressure rating and inlet size.
| Specification | ACE CD222 | ACE CD FL 22 |
|---|---|---|
| Weight with silencer | 12 kg / 26 lb | 11 kg / 24 lb |
| Weight without silencer | 11 kg / 24 lb | 10 kg / 22 lb |
| Listed length | 533 mm / 21" | 495 mm / 19.5" |
| Blows per minute | 1500 | 1320 |
| Piston diameter | 40 mm / 1.60" | 40 mm / 1.60" |
| Piston stroke | 88 mm / 3.46" | 44 mm / 1.73" |
| Listed air pressure | 6.2 bar / 90 psi | 6.2 bar / 90 psi |
| Listed air consumption | 19 l/s / 40 cfm | 21 l/s / 45 cfm |
| Listed air inlet | 19 mm / ¾" | 19 mm / ¾" |
| Shank shape and listed size | Hex, 22 × 82.5 mm (7/8" × 3¼") | Square, 19 × 82.5 mm (¾" × 3¼") |
| OEM reference number | 8900000121 | 8900000125 |
Metric and imperial values are reproduced as published; imperial figures are approximate.
Each model has two listed weights, one with the silencer fitted and one without. Compare like with like: in either configuration, the ACE CD FL 22 is listed 1 kg lighter. Mixing a with-silencer figure against a without-silencer figure would distort the comparison.
The weight difference is not a reason to remove the silencer. The source gives no noise data for either configuration.
The ACE CD FL 22 is also listed 38 mm shorter, and ACE Pneumatics states that its light weight design allows it to work in tight spaces. No minimum working clearance is published, and the source does not say how length is measured, so check access dimensions on site.
Horizontal, vertical and overhead work each place different handling demands on the operator. Follow the manufacturer's safety instructions for the position the job requires.
Blows per minute describes how often the piston strikes the chisel. Piston stroke describes how far the piston travels on each cycle.
With the same 40 mm piston diameter, the ACE CD222 has twice the stroke and a higher blow rate than the ACE CD FL 22. That does not mean twice the impact energy, faster progress or more material removed, and a shorter stroke does not guarantee finer control.
The published data includes no impact-energy figures or removal tests, so stroke and blow rate cannot establish a performance ranking or equivalence with a paving breaker.
Our Other Product
Chipping Hammer SteelBoth models list an air pressure of 6.2 bar (90 psi), and that is the figure to plan around rather than a setting to raise for more output.
What counts is the pressure at the tool while it runs, not just the compressor setting. Hose length, connections and other equipment on the same supply can all reduce it.
Air consumption shows how much compressed air the tool uses, in litres per second (l/s) or cubic feet per minute (cfm).
ACE CD FL 22 lists consumption of 21 l/s compared with 19 l/s for ACE CD222. The source's rounded imperial figures are 45 cfm and 40 cfm respectively.
The ACE CD FL 22 is the lighter, shorter-stroke model, yet it lists the higher figure. Weight, stroke and blow rate do not predict airflow, and lower consumption does not prove greater energy efficiency.
Reaching the rated pressure does not mean a compressor can sustain it: it must also deliver enough volume while the tool draws air. The source does not state how consumption was measured, and the tool's rating is only one part of the site's total air demand, so buyers should confirm:
The shank is the end of the chisel that sits in the tool, and its shape and size must match exactly. The ACE CD222 takes a 22 mm hex shank and the ACE CD FL 22 a 19 mm square shank, so their chisels are not interchangeable.
Both shanks share an 82.5 mm figure, but the source does not define what it measures. Confirm its meaning, along with collar and retention requirements, before buying chisels.
ACE Pneumatics lists a matching chisel for each model. That does not confirm that every chisel with similar dimensions will fit and retain correctly.
The air inlet is a separate check from the chisel. Both models list a 19 mm (¾") inlet, but the thread standard is not published.
Read Our Article
Chipping Hammer Technical & Engineering AspectsThe two models are documented for different work, so each application belongs to the model it is listed for.
ACE CD222
ACE CD FL 22
Where a job falls outside these listings, confirm suitability with the supplier before ordering.
Before requesting a quotation, confirm:
Distributors should also confirm the exact model name, OEM reference number and accessory configuration before quoting.
ACE Pneumatics Pvt. Ltd. manufactures and exports pneumatic tools. Its range includes rock drilling tools, pusher leg rock drills, underground rock drills, DTH hammers, jack hammers, sinker drills, paving breakers, pneumatic breakers, rivet busters, rivet hammers, clay diggers, pick hammers, chipping hammers and scabblers.
The company also supplies drilling and breaking accessories, including taper rods, integral drill rods, contractor tools and pavement breaker steel, chipping hammer steel and pneumatic chisels, and jumbo rivet buster steel and rivet sets. Each clay digger model is supported by a matching hex or square shank chisel, air line lubricators, hose pipes and model-specific spare parts.
Our Other Product
Construction ToolsA suitable clay digger is one whose size, percussion design, air demand and accessory interface all fit the same job. To discuss the right model and chisel configuration for your application, contact ACE Pneumatics.