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.

Product guide

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.

Selecting the right coupler module and tools for the machine

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.

The bucket series

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.

Tooth class (Dxx) for the bucket

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.

Materials worked and densities

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

Material Density in kg/m³ solid Density in kg/m³ loose Material Density in kg/m³ solid Density in kg/m³ loose
Clay and dry gravel 1,660 1,420 Altered rock: 25% rock – 75% earth 1,960 1,570
Clay and wet gravel 1,840 1,540 Altered rock: 50% rock – 50% earth 2,280 1,720
Dry clay 1,840 1,480 Altered rock: 75% rock – 25% earth 2,790 1,960
Sedimented clay 2,020 1,660 Crushed calcium rock 2,610 1,540
Wet clay 2,080 1,660 Sand and compacted clay 2,400 2,400
Basalt 2,970 1,960 Sand and loose clay 2,020 1,600
Kaolin bauxite 1,900 1,420 Sand and wet clay 2,230 2,020
Crushed granite 2,730 1,660 Sand and dry gravel 1,930 1,720
Wet gravel 2,170 1,930 Dry wet sand 1,900 1,690
Dry gravel 1,690 1,510 Dry loose sand 1,600 1,420
Sandstone 2,520 1,510 Dry wet sand 2,080 1,840
Ground gypsum 2,790 1,670 Crushed scoria 2,940 1,750
Crushed gypsum 3,170 1,660 Compacted dry earth 1,900 1,510
Mud 1,540 1,250 Loose wet earth 2,020 1,600
Ground natural stone 2,670 1,600 Top soil 1,370 950

Module limit characteristics and tooth categories

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.

Tooth class Range of forces at the tooth [kN] BYG FUTURA Twister CASE Smartfit CAT J CAT K C-REX COMBI C / PROCLAWS ESCO Ultralok
D5 35 to 52.5 SF4SYL CAT0 135-9390 MINI T29
D8 52.5 to 62.5 FT130S SF5SYL J200 1U3202 / CAT2 6Y6335 MIDI T29 V13SYL
D10 62.5 to 90 FT170S SF10SYL J225 6Y3222 C0T29 V17TYL
D15 90 to 122.5 FT190S SF15SYL J250 1U3252 R10GPE C1T35 U20S
D20 122.5 to 150 FT230S SF20SYL J300 1U3302 K80 220-9089 R14GPE U25S
D30 150 to 215 FT290S SF25SYL J350 1U3352 K90 220-9099 R18GPE U30S
D40 215 to 270 FT330S SF30SYL J400 7T3402 K100 220-9109 R23GPE W10GPE U35S
D55 270 to 340 FT390S J450/J460 K110 220-9119 R29GPE W20GPE U40S
D65 340 to 411 FT430S
J550 K130 220-9119 W25GPE U45S
D80 411 to 540 U60C
D5 35 to 52.5 M15 MG5L 5GPC DE365/17-7
D8 52.5 to 62.5 FKMCE SDMTLS MG8L 8GPC
D10 62.5 to 90 20C FK1TLR SD1TLS 531-03205 XS04SYL MG10L 10GPE
D15 90 to 122.5 FK2TLR SD3TLS XS05SYL MA15U 15GPE
D20 122.5 to 150 222TLR FK3TLR SD4TLS K15SYL XS10SYL MA20U 20GPE
D30 150 to 215 FK4TLR SD5TLS K20SYL MA30U 30GPE
D40 215 to 270 24TLR FK5TLR SD7TLS K25SYL MA40U 40GPE
D55 270 to 340 26TLR FK7TLR SD8TLS K30SYL MA50U 55GPE
D65 340 to 411 28TLR FK9TLR SD9TLS K40SYL MA60U 65GPE
D80 411 to 540 FK11PR

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

HD application 85 D10 62.5 < 85 < 90
XHD application 85 x 1.2 = 102 D15 90 < 102 < 122.5
GP application 85 x 0.8 = 68 D10 62.5 < 68 < 90