• Thank you for visiting HeavyEquipmentForums.com! Our objective is to provide industry professionals a place to gather to exchange questions, answers and ideas. We welcome you to register using the "Register" icon at the top of the page. We'd appreciate any help you can offer in spreading the word of our new site. The more members that join, the bigger resource for all to enjoy. Thank you!

Pin-on Bucket Mounting Specs

StumpyWally

Senior Member
Joined
Oct 21, 2011
Messages
516
Location
Liv'in the Dream ---------------> in Ballston, NY
Occupation
PE Civil Eng'r, Computer Sys. Mgr., Retired
I have been investigating adding a ditching bucket as well as a close-mounted quick coupler to my standard dig bucket collection. In the process I have tried to obtain the OEM pin-on bucket mounting specs, i.e., pin diameter, pin center-to-center dimension, & the pin mount face-to-face dimension.
So far, I've been stonewalled by both OEM's & bucket manufacturers. The manufactures say they will make the bucket (or coupler) to OEM specs, but they refuse to tell me what they are! Moreover, on the 2 dig buckets that I have (one made by Geith, the other by Werk-Brau, but both supposedly made to OEM specs), the buckets have different pin center-to-center dimensions. This of course affects bucket breakout.
So, can anyone explain to me what's the big secret about pin-on bucket mounting specs?? Why don't the OEM's just publish them on their respective web sites?? Or why don't the bucket manufacturers publish their collection of specs on their respective web sites?? In either case, then everyone would have easy access to the numbers.
There are 2 reasons that I can think why this isn't done.
One is that then all us users/customers might see that there is a lot of compatibility between OEM specs for a given class of machine & thereby be able to use our buckets on more machines. This of course could reduce business for the bucket manufacturers!!
Or two, we would see that there is absolutely no compatibility between OEM specs for a given class of machine, & then loudly complain to the OEMs & demand that they fix such a ridiculous situation!! In the meantime the bucket manufactures would continue to prosper.
Either reason would still allow the bucket manufactures to continue to sell quick couplers as a convenience, but make the process even easier because we could all find out the proper bucket mounting specs!!

I can understand that there are proprietary issues involved in the design of various buckets, but there shouldn't be in the bucket mounting specs, which are entirely up to the OEMs.

So, can anyone explain this sorry state of affairs??
 

Graham1

Senior Member
Joined
Mar 31, 2012
Messages
300
Location
Hampshire, UK
I agree it is a rediculous situation. I often get specialist attachments made and as you say the excavator manufacturers refuse to release mounting specs.
The good thing with a hydraulic quick coupler is there is normally a couple of inches tolerance in the pin centre pickup and within reason, the pin diameter being a bit smaller is not a mojor problem in a lot of applications.
Maybe we could start a list of compatable buckets. I'll start:
Cat 320 fit JCB 220
Jcb 130 fit Cat 312 (but not the other way round as dipper too wide)
 

RayF

Senior Member
Joined
Jul 8, 2011
Messages
640
Location
Perth Western australia
Occupation
lineborer/welder
Unfortunately looking at that PDF in regard to pin diameters,they only mention nominal sizes. For instance an 80 mm pin is not usually 80mm for machining purposes. A Cat pin would be 79.83mm and an Komatsu likely 79.95. Before I line bore a bucket I normally ask for a pin to measure so I get it right.
 

StumpyWally

Senior Member
Joined
Oct 21, 2011
Messages
516
Location
Liv'in the Dream ---------------> in Ballston, NY
Occupation
PE Civil Eng'r, Computer Sys. Mgr., Retired
Jerry...That PDF of pin carrier dimensions was very interesting. I'm in the process of reformatting the list into an editable spreadsheet form, with some other improvements. I'll post it here in this thread soon when I finish it.
 

StumpyWally

Senior Member
Joined
Oct 21, 2011
Messages
516
Location
Liv'in the Dream ---------------> in Ballston, NY
Occupation
PE Civil Eng'r, Computer Sys. Mgr., Retired
Here is a ZIP of a new Excavator Pin Carrier Dimensions spreadsheet. You can download it & add to it or edit it as you wish. If you add new or corrected info, please upload the new one.

NOTE: The spreadsheet is in EXCEL 2002 format for compatibility. It can be opened with the same or any newer version (e.g., v2003, v2007, 2010, etc.) But if you use a newer version, be sure to do a "save as" to the EXCEL 2002 format so that others who may not have your newer version will be able to open it.
 

Attachments

  • EXCAVATOR Pin Carrier Dimensions.zip
    30.1 KB · Views: 2,147

JDOFMEMI

Senior Member
Joined
Jan 3, 2007
Messages
3,074
Location
SoCal
Refreshing this thread, does anyone have the dimensions for a Doosan/Terex 300?

Any help is appreciated.
 

JDOFMEMI

Senior Member
Joined
Jan 3, 2007
Messages
3,074
Location
SoCal
Here is an update.

I got this list recently and thought I would post it as well to help out. It covers only Cat, but lists by family, and what machines they are typically found on.

CatExcavatorPinDimensions.jpg
 

StumpyWally

Senior Member
Joined
Oct 21, 2011
Messages
516
Location
Liv'in the Dream ---------------> in Ballston, NY
Occupation
PE Civil Eng'r, Computer Sys. Mgr., Retired
Jerry:

I transcribed your Cat pin carrier dimensions, the best that I could read them, into an Excel spreadsheet, which I have attached. Please review & correct it against the original that you posted. Then return the corrected one to me, & I will endeavor to add the info to the master "EXCAVATOR Pin Carrier Dimensions" one that I posted earlier.

NOTE: The spreadsheet is in EXCEL 2003 format. It can be opened with the same or any newer version (e.g., v2003, v2007, 2010, etc.) But if you use a newer version, be sure to do a "save as" to the EXCEL 2003 format so that others who may not have your newer version will be able to open it.
 

Attachments

  • Cat Pin Carrier Dimensions.zip
    2.3 KB · Views: 854

spencer.duits

New Member
Joined
May 23, 2013
Messages
1
Location
Lansing, MI
Are your measurements of the ears from the inner or outer part of the ears? I am taking up a project to do something similar to what this excel sheet is accomplishing. On some of my measurements of buckets that should fit equipment, the specs I have are different in the ears. Thanks.
 

StumpyWally

Senior Member
Joined
Oct 21, 2011
Messages
516
Location
Liv'in the Dream ---------------> in Ballston, NY
Occupation
PE Civil Eng'r, Computer Sys. Mgr., Retired
Are your measurements of the ears from the inner or outer part of the ears?

Between the ears or hangers on the bucket, face-to-face, on the part that has to fit around the stick faces. I presume that is what you mean by "inner". The "outer" would be irrelevant.

As to you coming up with different measurements, I would think that would be possible depending on the manufacturer of the bucket. Different manufacturers may have slightly different face-to-face hanger specs for the same machine, due to bad information from the OEM of the machine. Since the OEMs guard their bucket mounting specs like the crown jewels, I'm not surprised. That's what my list & your project hope to clarify.

I would think that the stick width & link width, face-to-face, is much more important & consistent, since it is defined by the OEM of the machines. Have you found errors there??

I've got a request in for specs from Doosan thru my dealer, but no results yet.

StumpyWally
 

StumpyWally

Senior Member
Joined
Oct 21, 2011
Messages
516
Location
Liv'in the Dream ---------------> in Ballston, NY
Occupation
PE Civil Eng'r, Computer Sys. Mgr., Retired
Updated Pin-on Bucket Mounting Specs

Here is a ZIP of a new Excavator Pin-on Bucket Mounting Specs spreadsheet.

I have added a revision history at the end, & based on input from some members, made major additions & updates for Cat, New Holland, & Volvo.

You can download it & add to it or edit it as you wish. If you add new or corrected info, please post the new one, or send me the updated info & I will incorporate it & post the updated spreadsheet.

StumpyWally
 

Attachments

  • EXCAVATOR Pin-on Bucket Mounting Specs.zip
    43.3 KB · Views: 554

JDOFMEMI

Senior Member
Joined
Jan 3, 2007
Messages
3,074
Location
SoCal
Stumpy

Many thanks for your work on this project. It is very helpful. I am sorry I have not had much time to get more info, as it is helpful to me so I like to be able to pass it along.

I am currently looking for JD 330 specs. Anyone have input on them? I am mainly interested to find if a bucket for a JD 330 would work with a Cat range coupler on a 330C, with "D" link.
 

Mr.Mel

Member
Joined
Apr 23, 2010
Messages
16
Location
Kent Ohio
Hello To All,
This topic of bucket mounting specifications is near and dear to my heart! I work for a Heavy Equipment attachment manufacturer and deal with this question of compatibility dozens of times a day for both Loaders and Excavators. We deal with most of the OEM players in the equipment market and most do not make it easy to obtain specifications on their machines to allow attachments to be made. My guess is they do not just throw this information at us because most OEM's sell their own attachments as well and we are then competing with them. Would you give your business info to your competitors?
The OEM companies that do give the data out have specific channels to take to get it, not easy or fast but it can be done as a manufacturer. At times we will tag team with the dealer and “bug” the OEM until they give it up. One of the steps to be able to obtain the info from the OEM is to sign a Non-disclosure agreement stating we will not distribute or share their information. We certainly would not jeopardize that agreement or risk legal actions by posting the data on our web-site. I would loosely say that the larger the OEM presence the less likely they are to assist. (Can you spell C-A-T?) We feel the frustration as well in providing standard and custom attachments to all of you. It is a regular and weekly occurrence to send our Engineers on the road to measure machine linkage to be able to complete designs. This is very expensive and time consuming.
Last but not least when the OEM’s have model changes there is always a scramble to determine if there was are pin and linkage changes involved. Also be cautious of people that make off the cuff remarks that model XYX will take the same buckets as a ZXY as sometimes they are 100% right and sometimes 100% wrong and it is your money at stake.
As far as standardization between OEM machines good luck with that and the only company to welcome that direction would be the one that set the standards.
Thanks for listening.
P.S. Deere 330C same as 350D = 100mm, 23 1/32 Pin center to center and 16 9/16“ Inside Between ears. Remember you did not get this from Mr.MEL!
 
Top