Komatsu WA420 and WA470 Loader Teeth: Three-Bolt vs Two-Piece Side-Pin System
Komatsu WA420 and WA470 Loader Teeth: Three-Bolt vs Two-Piece Side-Pin System
چهارشنبه، ۲۲ مهر ۱۴۰۵
🛒 Buy Komatsu 420 Three-Bolt Teeth (DM)
🛒 Buy Komatsu 470 Side-Pin Teeth (DM)
🛒 Buy Komatsu 470 Side-Pin Teeth (ZF)
Short answer: Komatsu WA420 and WA470 buckets come with one of two tooth systems. (1) One-piece three-bolt teeth bolt straight onto the lip; the reference is 423-70-13114, with left and right corners 423-70-13144 and 423-70-13154. (2) Two-piece systems use a three-bolt adapter on the lip and a side-pin tooth on the adapter; that tooth is the same 205-70-19570 used on the Komatsu PC200 and PC220 excavators. TTRMCO stocks both systems in DM and ZF, so the only question is which one is on your bucket.
How to tell which system you have
| What you see on the lip | System | What to order |
|---|---|---|
| Large tooth with three bolts going straight through the lip, no pin | One-piece three-bolt | 420 three-bolt tooth DM / 420 tooth ZF |
| Bolted adapter with a separate tooth held by a horizontal pin | Two-piece side pin | 470 side-pin tooth DM / 470 side-pin tooth ZF |
| Welded adapter with side-pin tooth | Welded two-piece | 470 welded adapter ZF |
In Iran the three-bolt tooth is often called the "420 tooth" or "470 three-bolt tooth". They are the same part, which is why our DM page names both.
Adapters and corners
- Three-bolt adapters: WA470 three-bolt adapter DM, 470 adapter DM, 470 adapter ZF.
- Corners: 420 corner DM, 420 corner ZF, 470 three-bolt corner adapter DM, 470 three-bolt corner adapter ZF.
Bolt torque matters on three-bolt parts: re-check the bolts after the first shift, because a loose bolted tooth wears its own holes and can shear the bolts under load.
Which system is better?
One-piece three-bolt teeth are simple and strong, but each change means removing three bolts and the whole tooth is scrap when worn. Two-piece side-pin systems are faster to change in the field and only the tip is thrown away; the adapter lasts several tip sets. For a loader in a quarry or crusher yard, many owners prefer the two-piece system for uptime. On general earthworks either works well.
ZF parts come in alloy grades: Normal for ordinary soil, Special for abrasive, silica-rich ground, and Mining for quarry and rock work. Not every ZF part is made in every grade; the product page lists the grades actually available for that part. DM uses one standard alloy (some models also have a reinforced version) and has no mining grade.
Don't confuse with
- Hitachi 470 excavator teeth: a different machine and a different tooth, see Hitachi 470 tooth.
- Volvo 470: also a different part, see Volvo 470 tooth ZF.
FAQ
Is the WA470 side-pin tooth really the same as the PC220 tooth?
Yes, the two-piece WA470 system takes the 205-70-19570 family tooth, which is also the standard Komatsu PC200 and PC220 tooth.
Can I convert a three-bolt bucket to side-pin teeth?
Yes, by fitting three-bolt adapters to the same lip holes and running side-pin teeth on them. Check the lip hole pattern first.
Are DM teeth for 420 available in a mining grade?
No. DM has no mining grade. For quarry work look at the ZF options on the product page.
Does TTRMCO export to neighbouring countries?
Yes. Call +98 21 91001357 for an export quote.
Order from TTRMCO
Not sure which part fits your machine? Send a photo of the old part and your machine model. TTRMCO has more than 30 years in road-construction and mining wear parts and is the official dealer of DM and ZF in Iran. Every DM and ZF part ships with a breakage and authenticity warranty, and we export to neighbouring countries.
- Phone: +98 21 91001357
- Mobile / WhatsApp: +98 912 577 7516
- Website: ttrm.ir
