Selecting the right module and tools for your excavator

The objective of the process described below is to help you to choose the right coupler and tools, to get the best out of the machine.

The product guide contains all the information you need to choose your equipment.

• Select the manufacturer and model of your machine.
• You’ll find the recommended module, bucket series and tine class for a GP or HD application.
• If your machine isn’t shown in the selector, contact us.

Excavator product guide

Not following our recommendation invalidates your right to the statutory guarantee.

For your machine, it is extremely important to choose the ACB+ coupler module in Morin Original System. You have to define the right module, as a function of your machine specification, to ensure maximum reliability of the Fastener/Tool combination.

This choice opens up a broad range of tools compatible with your machine in terms of force at the tine and bucket capacity.

The selection process generally involves:

For the coupler

• Choose the module from the Morin Original system, based on the weight of the carrier,
• Check that the torque developed by the vehicle bucket kinematics is compatible with the forces for which the module and its tools are rated.

For the tool

• Define the application: GP, HD or XHD (General Purpose, Heavy Duty or Extra-Heavy Duty).

Ground categories as defined by DIN18300:

• Application GP: classes 1 to 3
• Application HD: classes 4 to 5
• Application XHD: classes 6 to 7

The ACB+ range of tools offers outstanding strength and equipment quality. The double-bottoms on the backhoe buckets have been adopted for the entire bucket range, for both mini-excavators and excavators.

• Define the teeth category (Dxx)

Tooth size is determined by the break out force developed by the excavator and by the application.

There are generally two bucket profiles per module. The profile is selected as a function of the bucket radius and of the machine’s lifting capability.

The sizing of the accessory must also take into account the vehicle’s overturning limits and the nature of the material worked. Simply computing the total equipment weight (coupler weight + bucket weight + bucket load weight) will enable you to check that the accessory is compatible with the machine by comparing with the value in the load table as per ISO 10567, for your machine, in the following situations:

• turret transversal,
• lifting load at maximum range.

The total equipment weight, computed using ACB+ data, must be less than the value without bucket or fastener given in the manufacturer’s table*.

*An Excel tool is provided to perform this overall check. For further information, contact us.

Like the couplers and tools, the wearing parts (teeth) are rated for a given force limit.

The application and the force developed at the tine define the tine size to be used for the tool. The tooth class (Dxx) is mentioned in both the couplers table and the tools table.

For any particular application, please consult our technical department first.

The table below shows the usual materials densities needed for your confirmation computing.

Limit characteristics table

The data for our range of couplers is shown in the table below.

	M0	M1	M2	M3
Min. weight – Max. weight [t]	0.5 t – 2 t	2 t – 3.5 t	3.5 t – 5.5 t	5.5 t – 7.5 t
Max. break out force [kN]	19	28.4	38.5	56
Typical bucket radius [mm]	536	750	900	1,000
Max. torque [mkN]	10	21	35	56
Tooth class [HD]	D5	D5	D8	D10-D15

	M4	M5	M6	M7
Min. weight – Max. weight [t]	7.5 t – 10 t	10 t – 15 t	15 t – 24 t	24 t to 35 t – 35 t to 45 t
Max. break out force [kN]	73	110	180	249
Typical bucket radius [mm]	1,200	1,300	1,600	1,900
Max. torque [mkN]	88	143	288	473
Tooth class [HD]	D15-D20	D15-D20	D20- D30-D40	D40-D55 and D65

Teeth classes table

Each tooth has its own specific limits in relation to the break out force applied by the vehicle. It is therefore essential that the tine selected should have sufficient strength to accept the forces imposed, so that the tines do not break or wear prematurely. To help you choose, ACB+ has classified tines as a function of the break out force for which they were designed.

The table below lists the main standard tines, by manufacturer, broken down by tine category. One-piece bolted teeth are shown in bold characters.

The general application adopted for this classification is the HD application. Tine performance should be increased by around 20% for an XHD application and reduced by around 20% for a GP application.

Consult us for any extrapolation.

Example for a tine that has to accept a break out force of 85 kN developed by the machine