New excavator pins

honey_badger

honey_badger

Well-known member
Looking to replace the pins on my jz70, a couple of them will be non standard lengths.
What sort of material should I be looking at going for with regard to pins? Saw someone on youtube used induction hardened steel?
 
V8Druid

V8Druid

do it as well as you can,but learn to do it better
Looking to replace the pins on my jz70, a couple of them will be non standard lengths.
What sort of material should I be looking at going for with regard to pins? Saw someone on youtube used induction hardened steel?
Evans and Reid for std pins/bushes (y) ... they seem pretty decent on prices for all sorts ... also do full kits if required :cool: https://www.miniexcavatorcentre.com/id-plant.html

what size pins other wise?
buy a 3M bar of EN10 BDMS (bright drawn mild steel ) from a stock holder and cut as required - major savings to be had ;)
 
honey_badger

honey_badger

Well-known member
Evans and Reid for std pins/bushes (y) ... they seem pretty decent on prices for all sorts ... also do full kits if required :cool: https://www.miniexcavatorcentre.com/id-plant.html

what size pins other wise?
buy a 3M bar of EN10 BDMS (bright drawn mild steel ) from a stock holder and cut as required - major savings to be had ;)
Not measured sizes yet. Still on other maintenance jobs beforehand... Even though pins should have been replaced years ago...
Bright will be ok for all the pins will it? I'd be fine getting a large bar and cutting it myself, then facing off &chamfering the ends, drilling in required grease routes and channels on the lathe myself/getting my mate to do it. If it'll do the same job and be cheaper I'd jump at it...
So I don't need anything hardened then?
 
Left hooker

Left hooker

Well-known member
Not measured sizes yet. Still on other maintenance jobs beforehand... Even though pins should have been replaced years ago...
Bright will be ok for all the pins will it? I'd be fine getting a large bar and cutting it myself, then facing off &chamfering the ends, drilling in required grease routes and channels on the lathe myself/getting my mate to do it. If it'll do the same job and be cheaper I'd jump at it...
So I don't need anything hardened then?

Most pins in boom dipper are hardened after machining as you will struggle to drill after
 
honey_badger

honey_badger

Well-known member
Most pins in boom dipper are hardened after machining as you will struggle to drill after
Yes thought they'd be hardened. Druid suggested that I buy some bright bar and cut that to size, would i be at a significant disadvantage doing this for all the pins at the end of the dipper and pins mounted on the bucket?
 
V8Druid

V8Druid

do it as well as you can,but learn to do it better
suitability depends on whether the pins are fixed or mobile .... the EN10'll last a significant amount of time in both .. better if fixed ;)

how much work is yon machine going to do ?
 
honey_badger

honey_badger

Well-known member
suitability depends on whether the pins are fixed or mobile .... the EN10'll last a significant amount of time in both .. better if fixed ;)

how much work is yon machine going to do ?
By fixed do you mean where one end has a second hole and is then bolted into position so the pin can't rotate? Not fixed atm but wouldn't be a hard job to make the new ones fixed if so.

Well its not being used hard on a worksite every day but it does do a lot of digging and brash clearing for a farm digger. I'd obviously like the pins to last with a tight fit as long as possible...
Be aight machining hardened stuff with carbide though so if I could buy a length of hardened and then cut it up..? grease throughhole would be the hardest presumably, although I could always add grease nipples on the boom in the places that used to use holes in the pin if needed?

If any of that makes 1oz of sense haha
 
honey_badger

honey_badger

Well-known member
never ceases to amaze me how/why ppl dog a disc into a grinder :mad:.... they're self tightening FFS :rolleyes: .. finger tight's enough or they're total bastards to get back out :rolleyes:o_O
Crazy isn't it. If you do it up fingertight you can then take it off without the tool 90% of the time too.....
 
honey_badger

honey_badger

Well-known member
Druid is this what you meant by a fixed pin?
1570906797359.png
 
V8Druid

V8Druid

do it as well as you can,but learn to do it better
Ideal. I'll be making the ones on the JCB fixed when its time to replace them then.
Does that ring not get caught on things all the time?
It's removable Badger .... nut welded to pin end and the rings is on a bolt with a lock nut .... carries my hoses for my VA-r when its on, etc. and when it's not they're rarely at risk ...... also have another pair further up the dipper to route the plumbing through ... have to be large enough to get a couple of lines through (and FF QCs);)
WP_20160525_13_56_57_Pro.jpg
WP_20161104_14_31_35_Pro.jpg
 
honey_badger

honey_badger

Well-known member
It's removable Badger .... nut welded to pin end and the rings is on a bolt with a lock nut .... carries my hoses for my VA-r when its on, etc. and when it's not they're rarely at risk ...... also have another pair further up the dipper to route the plumbing through ... have to be large enough to get a couple of lines through (and FF QCs);)View attachment 9465View attachment 9464
Now that is a neat idea. In both senses! You've got a lot of ideas I'll be storing away incase i ever need them...
 
honey_badger

honey_badger

Well-known member
I've not checked yet, but if the holes for the pins have been worn beyond the bushing what can I do to save them. Will i have to get someone out with a line borer to weld them up and rebore them? I could look at getting my mate to do them with his milling machine. Well the ones on the quick hitch not sure about the ones at the bottom of the dipper...
 
V8Druid

V8Druid

do it as well as you can,but learn to do it better
Now that is a neat idea. In both senses! You've got a lot of ideas I'll be storing away incase i ever need them...
can't take the credit for the rings :rolleyes: .... @Mogman 's idea originally, on his selector grab :) .... I just modified it a bit to suit my needs and stuck 'em on the pins as that's where everything articulates around ;)
 
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