I took in for a trade for partial payment of debt owed a grey market Hitachi Zaxis ZX55USR-5A. The bottom rollers are shot and looking all over the internet for replacements but no luck. They are not origional Hitachi brand and have stamped PC 40 on the ends. I talked to a Hitachi rep and gave him the Model # and the MFG # off the plate and he said the Model is Grey Market but the MFG # indicates it is an American model so something is fishy here. He said the real Hitachi roller costs $430 but when I gave him the size dimensions, they were incorrect. I have another older Hitachi and needed a roller for it and got one which was exact fit from a John Deere dealer since many parts are exchangeable since they were tied together until recently split up.. I see these rollers on the cheap Chinese knock off site Alibaba for $40 a piece and ask for dimensions they say they have message for me but there is no message. Rough measurement for the old rollers are: Width 6 3/8" end to end but not including the resting lip where the undercarriage box rests on. Diameter of the roller is 3 3/4" and diameter of the center of the roller ridge which fits in the groove of the rubber track is 4 5/8". The diameter of the bolt securing the roller to the frame is 16 mm. The ridge width at the top is around 1 3/8". Any help on finding these would be great. thanks, Rat
??? https://diggerparts.co.nz/product/track-roller-for-hitachi-ex4098120140-190m16/
heymccall: Appreciate the help. The diameter of the rollers are within a couple of MM's (these rollers are really worn)..but unfortunately , the width is too much, I show widths of 122, 160 and 175 while the RX 40 shows widths of 142,190 and 208. If the diameter of the rollers were off a little it really wouldn't matter too much since i will be getting a full set but the width is critical so will try contacting a big wrecking yard that sells used rollers and might get lucky. Thanks, Ray
It looks like the dimensions of this roller is very close. See screenshot below.
PC40 means Komatsu 40. It is very likely that your parallel-imported machine is sold from China. The website you mentioned is most likely Taobao.com. This e-commerce platform is recognized by most Chinese people and is the Chinese version of eBay.
Diesel Dave: Many thanks for that info...I think you hit the nail on the head with that find. There is a Komatsu dealer about 70 miles north of here and I will drive up and bring the old one to see if this will work. Since my rollers are well worn, the dimensions are off a little but the roller sizes are close enough to work since I am getting an entire set and the most critical measurement is the one that fits inside the "box" of the undercarriage frame and looks to be spot on. I will see what Komatsu wants for a set of 8 and then see what prices other aftermarket dealers are selling for.. Again, thanks for this info. Ray