Hitachi 20Y-934-2211 Weld-On Tooth Adapter

The Adapter Decides Everything Above It

A bucket tooth is a consumable: it is bought, worn out and thrown away on a schedule. The adapter under it is not. It is welded to the lip, it takes the load the tip passes down, and once the pin hole opens up or the nose wears thin it destroys every new tooth you fit to it. That is why we ask for the adapter photo on any tooth enquiry — on the ZX200-220 class, the nose is the one part that tells us which tooth system the bucket is actually running.

ZX200-220 class as Hitachi lists it	Part number	Role
4363714PS	20Y-934-2211	Weld-on adapter — this page
4383046PS	V29	Weld-on adapter (V29 system, with V29SHV point and V29PN pin)
4414271PS	F3610T-35	Weld-on adapter
4364121PS	205-70-19570	Tooth point, side-pinned with 09244-02496
4427919PS	4427919 (35S)	Tooth point, top-pinned with 4501627 + 4501625
2014503PS / 2014504PS	2014503, 2014504	Side cutters

Two things follow from that table. First, three adapters are listed for the same machine class, so "the ZX200 adapter" is not a single part — V29, F3610T-35 and 20Y-934-2211 are separate castings with their own nose geometry. Second, the class is listed with both a top-pinned point and a side-pinned point, which is why the adapter and its teeth have to be ordered as a matched set.

Before You Cut the Old One Off

Check on the old adapter	How	What it decides
Pin-hole shape	Look for an ovalised hole or a step where the pin has hammered	An opened hole will throw pins — replace, do not re-use
Nose tip thickness	Compare against the unworn area near the weld	Confirms whether the nose has material left to hold a new tooth
Fit of a new tooth	Dry-fit a new point on the nose and try to rock it by hand	Any movement means the nose is finished
Which family the nose is cut for	Pin direction and pin diameter	Top-pin nose = 35S points; side-pin nose = 205-70-19570 style points
Weld seam and lip condition	Inspect the lip and the weld toes for cracking	Decides whether the adapter job is one nose or a re-lip

Do this inspection with the old tooth off and daylight on the nose. Most adapters we are asked to replace failed at the pin hole long before the nose tip was worn out, and the owner only noticed because new teeth started leaving the bucket on the first shift.

Numbers That Travel Between Brands

In this corner of the market, part numbers are heavily cross-referenced, and it causes real orders to go wrong. Hitachi's own ZX200-220 list carries the Komatsu-format tooth number 205-70-19570; aftermarket sellers list Hitachi's 20Y-934-2211 adapter against PC200 and PC210 tooth shanks. Neither fact means a Hitachi casting drops onto a Komatsu lip or the other way round. Use catalogue cross-references as a lead and the casting in your hand as the evidence: nose width at the pin line, pin-hole position and pin diameter, sent with a photo, are enough for us to confirm the class before you commit to a quantity.

What We Do Not Publish

No price. Adapter cost depends on quantity, whether they are ordered as a set with teeth, pins, locks and side cutters, and the shipping lane. What we do publish is checkable — the numbers on this page come from Hitachi Construction Machinery's own selected-parts list for the ZX200-220 class, read 30 September 2026. Send the machine model with serial prefix, the nose measurements and the quantity and we come back with a firm quote, FOB Shanghai or CIF to your port.

Stated plainly: these are aftermarket replacement weld-on adapters cross-referenced to Hitachi part numbers. They are not genuine Hitachi parts and we do not describe them as such.

FAQ

Q: Which tooth points are listed with the 20Y-934-2211 adapter?
A: Hitachi lists 205-70-19570 (4364121PS), the 35S point 4427919, PC200RC-N and V29SHV in the same ZX200-220 class as adapters 20Y-934-2211, V29 and F3610T-35. Because that class carries both a top-pinned and a side-pinned point, the pin system on your nose decides the pairing — order the adapter and the teeth together.

Q: When should I replace the adapter instead of buying new teeth?
A: When the pin hole has opened up, the nose tip has worn, or a new tooth can be rocked on the nose by hand. New teeth on a worn nose throw their pins in a shift and take the teeth with them.

Q: Aftermarket listings show 20Y-934-2211 as a PC200/PC210 shank — will it fit a Komatsu bucket?
A: Treat that as a catalogue lead, not a guarantee. These numbers are cross-listed across brands, which is exactly why we ask for nose measurements and a photo rather than working from the machine model or a catalogue cross-reference alone.

Q: Are these genuine Hitachi adapters?
A: No — aftermarket replacements cross-referenced to the Hitachi number, FOB Shanghai or CIF, and described as such.