The Tamco/Toku THA-4B is a gooseneck-handle chipping hammer with a 4-1/32 in. stroke and 1,800 BPM long-stroke hitting power in an 18 lb tool. Its saw-tooth handle-to-cylinder joint gives a more secure, positive fit than conventional pinned designs, a THA-series detail that matters when the tool lives on scaling, weld dressing and detail demolition. It runs alongside the D-handle models in our chipping hammer range.

Air feeds through a 3/8 in. NPT inlet on a 1/2 in. line a contractors air hose with crowsfoot fittings plumbs it straight off the manifold. Chuck options are .580 in. hex or .680 in. round, matching the construction chisels stocked in Denver, and the article on choosing a concrete breaking tool helps place a long-stroke chipper against breakers and busters.

• 4-1/32 in. stroke at 1,800 BPM for deep, hard-hitting chipping
• Gooseneck handle with saw-tooth handle-to-cylinder joint for a positive, secure fit
• Chuck options: .580 in. hex or .680 in. round
• 1-1/8 in. piston diameter; 33 CFM air consumption
• 18 lb tool weight, 18-29/32 in. overall length; 3/8 in. NPT inlet for a 1/2 in. hose
• Applications: scaling, chiseling, weld dressing, surface prep and detail demolition
• Manufactured by Toku of Japan, whose export catalog spans industrial chipping, riveting and demolition tools
• Stocked in Denver by Crowder Supply; free UPS Ground shipping

THA-4B FAQ

What makes the THA-4B’s handle different?
The THA-series saw-tooth handle-to-cylinder joint locks the gooseneck handle to the cylinder more positively than conventional pinned designs — a fit that holds up under long-stroke pounding.

What steel and air does it take?
Chisels with a .580 in. hex or .680 in. round shank, and 33 CFM at 90 PSI through a 3/8 in. NPT inlet on a 1/2 in. hose.

THA-4B or the TCH-3?
The THA-4B’s 4-1/32 in. stroke at 1,800 BPM hits harder per blow for deep chipping; the TCH-3 trades stroke for speed with 2-1/2 in. at 2,000–2,200 BPM.

Who is behind the Tamco/Toku name?
Toku, the Japanese pneumatic-tool manufacturer whose export catalog spans industrial chipping, riveting and demolition tools.