CZ / C Series Pneumatic Chipping Hammer (Air Chisel) — hero shot

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CZ · C Series ISO 11148-4 (pneumatic chipping hammers)

CZ / C Series Pneumatic Chipping Hammer (Air Chisel)

Name: CZ / C Series Pneumatic Chipping Hammer (Air Chisel)
Brand: Kedes Machine
SKU: CZ · C Series

Pneumatic air chisel for weld slag removal, casting trim and heavy descaling work. Four configurations cover light continuous work (CZ20 / CZ25) and heavy stock removal (C4 / C6B). High impact frequency for clean weld-slag knock-off without damaging parent material.

Impact energy

2 – 10 N·m/min

Impact frequency

3,200 – 5,500 BPM

Bore size

20 – 30 mm

Drive

Spark-free pneumatic

TYPICAL REPLY · 1 WORKING SHIFT (GMT+8)

01 Model Comparison

Pick your size — 4 models in the series.

	CZ20 1.5 kg · light continuous slag work · 5,500 BPM	CZ25 2.0 kg · general weld trim · 4,200 BPM	C4 4.0 kg · heavy stock removal · 10 N·m/min	C6B 6.4 kg · heaviest descaling · 10 N·m/min
Impact energy	2.00 N·m/min	3.00 N·m/min	10.00 N·m/min	10.00 N·m/min
Impacts per minute	5,500	4,200	3,200	3,200
Bore size	20 mm	25 mm	30 mm	30 mm
Air consumption	3.5 L/s	5.0 L/s	1.1 L/s	0.2 L/s
Net weight	1.5 kg	2.0 kg	4.0 kg	6.4 kg
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03 Key Features

Built for the job site.

// 01

Spark-free for hazardous-area weld trim

Pneumatic operation safe for damp, conductive and ATEX zones. The standard tool for slag knock-off inside pressure vessels, tanks and refinery vessels during turnaround work.

// 02

Light (CZ20/25) vs heavy (C4/C6B) duty

CZ20 / CZ25 (1.5 – 2 kg) for continuous slag knock-off after welding — sized for shift-long operator use. C4 / C6B (4 – 6.4 kg) for heavy descaling and foundry stock removal where impact energy matters more than operator fatigue.

// 03

High impact frequency

Up to 5,500 BPM on CZ20 — high frequency low-energy strikes clean slag without damaging parent metal. Lower-frequency higher-energy variants (C4/C6B) for stock removal on castings.

// 04

Standard chisel interface

Accepts standard pneumatic chisel bits — flat, pointed, beveled and scraper. Bit inventory is industry-standard, sourced anywhere.

04 Industry Applications

Where this series earns its keep.

Foundry & casting trim

Riser, gate and parting-line trim on steel and iron castings. C4 / C6B standard for foundry stock removal where impact energy is the throughput driver.

See foundry & casting trim solutions

Shipyard slag & descaling

Weld slag knock-off and surface descaling on hull plate during fabrication and repair. CZ20 / CZ25 standard for slag-after-welding workflow.

See shipyard slag & descaling solutions

Automotive panel & general assembly

Folding side plates, surface prep and slag removal on automotive body panel and chassis assembly work.

See automotive panel & general assembly solutions

06 FAQ

Common questions about the CZ · C Series.

Can't find your answer?

Light or heavy variant for weld slag removal?

CZ20 / CZ25 — high frequency knocks slag off cleanly without damaging the parent metal or the weld bead. C4 / C6B is too aggressive for slag knock-off and will dent the parent plate. Reserve C4 / C6B for stock removal applications (casting trim, heavy descaling, foundry).

07 Related Series