ISO/PRF 8210

INTERNATIONAL ISO
STANDARD 8210
Second edition
Equipment for harvesting — Combine
harvesters — Test procedure and
performance assessment
Matériel de récolte — Moissonneuses-batteuses — Mode opératoire
d'essai et évaluation des performances
PROOF/ÉPREUVE
Reference number
ISO 8210:2021(E)
ISO 2021
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ISO 8210:2021(E)
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© ISO 2021

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Foreword ........................................................................................................................................................................................................................................iv

1 Scope ................................................................................................................................................................................................................................. 1

2 Normative references ...................................................................................................................................................................................... 1

3 Terms and definitions ..................................................................................................................................................................................... 1

4 General requirements ..................................................................................................................................................................................... 2

5 Characteristics of machine ......................................................................................................................................................................... 2

5.1 Significant details.................................................................................................................................................................................. 2

5.2 Speeds ............................................................................................................................................................................................................. 3

5.3 Configurations ......................................................................................................................................................................................... 3

5.4 Dimensions ................................................................................................................................................................................................. 3

5.5 Other measurements ......................................................................................................................................................................... 5

5.5.1 Cylinders and rotors ..................................................................................................................................................... 5

5.5.2 Concaves ...................................................................... ............................................................................................................ 6

5.5.3 Separating devices .......................................................................................................................................................... 6

5.5.4 Straw walker ........................................................................................................................................................................ 6

5.5.5 Conveying devices ...................................................................... ..................................................................................... 6

5.5.6 Sieves and sieve area .................................................................................................................................................... 7

5.5.7 Dirt screens, recleaners and other auxiliary cleaning devices ................................................. 7

5.5.8 Permeable surfaces ........................................................................................................................................... ............. 7

5.5.9 Functional components ............................................................................................................................................. 7

5.6 Other characteristics .......................................................................................................................................................................... 7

5.7 Position of centre of gravity ......................................................................................................................................................... 7

5.8 Grain tank .................................................................................................................................................................................................... 8

6 Functional field tests ........................................................................................................................................................................................ 8

6.1 General ........................................................................................................................................................................................................... 8

6.2 Information to be recorded .......................................................................................................................................................... 8

6.3 Behaviour and performance of combine harvester ................................................................................................ 8

6.3.1 General...................................................................................................................................................................................... 8

6.3.2 Functional aspects .......................................................................................................................................................... 9

6.3.3 Comfort, convenience and safety ....................................................................................................................... 9

6.3.4 Ease of adjustment and routine maintenance .....................................................................................10

6.3.5 Repairs ...................................................................................................................................................................................10

7 Capacity tests.........................................................................................................................................................................................................10

7.1 General ........................................................................................................................................................................................................10

7.2 Crop selection and field conditions ....................................................................................................................................10

7.3 Test and comparison combine harvesters ...................................................................................................................11

7.4 Adjustment of test and comparison combine harvesters ...............................................................................12

7.5 Catching apparatus ...........................................................................................................................................................................12

7.6 Conditions and procedure for collecting catch.........................................................................................................13

7.7 Treatment and analysis of catches ......................................................................................................................................14

7.8 Test data .....................................................................................................................................................................................................14

7.9 Calculations .............................................................................................................................................................................................15

7.10 Graphical presentation of results to obtain capacity ..........................................................................................15

8 Test report ................................................................................................................................................................................................................15

8.1 General ........................................................................................................................................................................................................15

8.2 Functional field tests .......................................................................................................................................................................16

8.3 Capacity tests .........................................................................................................................................................................................16

Annex A (normative) Tests on sloping ground ........................................................................................................................................17

Annex B (informative) Example calculations for a test run .......................................................................................................18

Bibliography .............................................................................................................................................................................................................................20

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This document was prepared by Technical Committee ISO/TC 23, Tractors and machinery for agriculture

This second edition of ISO 8210 cancels and replaces ISO 8210:1989 and ISO 6689-2:1997, which have

— Test and performance requirements formerly found in ISO 6689-2 have been added.

Any feedback or questions on this document should be directed to the user’s national standards body. A

This document specifies a test procedure for the measurement and testing of combine harvesters. It

applies to either self-propelled or trailed type, either directly cutting the crop or picking it up from a

This document specifies the terminology and methods to be used for measuring important

characteristics of combine harvesters. It includes both functional and capacity tests, in other words,

those conducted over an extended period when ease of operation, ease of adjustment, rate of work and

general operating characteristics can be assessed, and those carried out on specific occasions for the

The following documents are referred in the text in such a way that some or all of their content

constitutes requirements of this document. For dated references, only the edition cited applies. For

undated references, the latest edition of the referenced document (including any amendments) applies.

ISO 789-3, Agricultural tractors — Test procedures — Part 3: Turning and clearance diameters

ISO 4254-7, Agricultural machinery — Safety — Part 7: Combine harvesters, forage harvesters, cotton

ISO 5007, Agricultural wheeled tractors — Operator's seat — Laboratory measurement of transmitted

ISO 5131, Tractors for agriculture and forestry — Measurement of noise at the operator's position —

ISO 5687, Equipment for harvesting — Combine harvesters — Determination and designation of grain tank

ISO 5702, Equipment for harvesting — Combine harvester component parts — Equivalent terms

ISO 6689:— , Equipment for harvesting — Combine harvesters and functional components — Vocabulary

ISO 14396, Reciprocating internal combustion engines — Determination and method for the measurement

of engine power — Additional requirements for exhaust emission tests in accordance with ISO 8178

For the purposes of the documents, the terms and definitions given in ISO 5702, ISO 6689, ISO 4254-7

ISO and IEC maintain terminological databases for use in standardization at the following addresses:

other combine harvester or combine harvester configuration to which the test machine is compared, if

material collected through the primary clean grain discharge point for the purpose of sample analysis

material collected from the machine’s normal point of discharge from the separator

material collected from the machine’s normal point of discharge from the cleaning system

4.1 The way in which the combine was selected or obtained for testing and the approximate duration

4.2 The combine harvester shall normally be operated in accordance with the manufacturer’s

instructions. The test report shall record and give reasons for any significant departure from them.

4.3 Commercially available accessories as necessary or desirable for the various crops in which the

4.4 Setting and adjustments of the machine shall be generally in accordance with the manufacturer’s

All significant details of the combine harvester shall be established and verified in accordance with

the definitions, characteristics and performance criteria laid down in ISO 6689. All dimensions and

performance relating to combine harvesters and their functional components, shall be assessed in

5.2.1 For self-propelled combine harvesters, measurements of the speed of any component shall be

made under “no-load” conditions with the governor control lever set in the normal working position

5.2.2 For power take-off (PTO) driven machines, these speeds shall be measured at standard PTO

5.2.3 Ground speeds shall be measured on a hard, horizontal surface (see ISO 3965), with the governor

control lever in the normal working position and the crop processing mechanism disengaged.

5.2.4 If the combine harvester is fitted with stepless speed change mechanism, the maximum

and minimum speeds obtained for each gear shall be measured. Otherwise, speeds obtained for all

Component modes for each configuration shall be in accordance with the manufacturer's

recommendations. Refer to the combine harvester’s operator’s manual for applicable configuration for

Dimensions of combine harvesters shall be measured according to either field operation or transport

5.4.1 Combine harvester length shall be measured, both in transport configuration and equipped for

field configuration. In the field conditions, the head shall be fully raised and the reel fully forward; the

longest available divider shall be fitted. If other equipment, options or attachments affect the length,

5.4.2 Combine harvester height shall be measured with all components in position for transport

configuration. The height with all components in position for field configuration shall be measured. It

5.4.3 Combine harvester width shall be measured both in the transport configuration and equipped

for field configuration. In the field condition, the head fitted shall be the same as that fitted when

determining head working width and effective cutterbar width as specified in ISO 6689.

5.4.4 The turning diameter shall be measured in accordance with ISO 789-3 without applying the

If the left-hand and right-hand turning radius are not equal, both should be stated.

If the left-hand and right-hand turning radius are not equal, both should be stated.

5.4.6 Where adjustable dividers are used, the minimum and maximum head working widths shall be

5.4.7 Where the header width is adjustable, the minimum and maximum effective working widths of

5.4.8 The ground clearance, the maximum discharge height, the maximum clearance height, the

maximum reach, length of unloader, and the height of the cutterbar shall be determined under the

a) Tyre and wheel or track equipment shall be stated, and tyres shall be inflated to the field operating

b) The plane on which the combine harvester is standing shall be substantially level.

c) The size and type of head and reel installed at the time of measuring shall be stated.

5.4.9 Furthermore, the height of the cutterbar shall be stated as the highest point and the lowest point

to which the cutterbar can be raised or lowered, measured from the ground plane to the tip of the knife

Single or multiple cylinders or rotors may be disposed laterally (see Figure 1) or longitudinally (see

Figure 2) within the combine harvester. If multiple cylinders or rotors are used, the number shall be

5.5.2.1 If more than one concave is used, the dimensions and surfaces of each of them shall be indicated

5.5.2.2 If the combine harvester has more than one rotor, with its related concave and separating

grates, the quantity shall be indicated with the length and the area of the separating grate.

5.5.2.3 When using concave arc to describe the concave, the diameter of the associated cylinder, or

rotor, shall also be noted (see Figures 1 and 2). If the concave arc varies with concave adjustment, then

5.5.3.1 5.5.2.2 also applies for separating grates and secondary separating grates.

5.5.3.2 The surface of auxiliary separating devices shall not be added to that of separating devices.

If there are adjustable sections at the rear of the straw walker, they shall be fully extended when

Devices that only convey material within the combine harvester (for example, grain pans, augers,

paddles and other non-permeable conveyors) while they can contribute to good separation by stratifying

the material advantageously, do no actual separation of grain from material other than grain (MOG),

and their areas may not be classified as separating areas, or added to the other separating areas.

To determine the sieve area where sieve extensions are used in the standard specifications of the

combine harvester, their surfaces shall be measured by the same means and these conditions shall be

stated. The component sieves and sieve extensions may be totalled and represented as total sieve area.

If a grain pan extension comb (grate or fingers) is used to achieve suspension of the grain mat, its area

For the purposes of reporting combine harvester specifications, the functional component areas

defined in ISO 6689:—, 3.6 and covered in 5.5 shall be listed separately and individually. Areas shall not

be used singly or in combination as a measure of a combine harvester's capacity, performance or value.

5.6.2 The throughputs defined in ISO 6689:—, 4.1 and measured in 7.2.5, shall be indicated with the

5.6.3 When indicating the combine harvester mass equipped for operation in the field, the accessories

5.7.1 It shall be specified, for the machine tested, whether it is equipped with powered rear-wheel

drive or not and if it has a chopper attachment. This is a supplementary measurement applicable to self-

5.7.2 The position of the centre of gravity shall be determined under the conditions outlined in Table 3.

The grain tank capacity and unloading time shall be measured in accordance with ISO 5687.

Functional field tests shall be carried out over an extended period, for example, several months or a

complete harvesting season in a particular area and shall include as wide a range as practicable of

e) crop: variety, condition, weed content, grain moisture, residue moisture, and approximate yield;

Throughout the test period, the general behaviour and performance of the combine harvester shall

be kept under observation, and shall subsequently be reported on, with particular reference to the

The operator shall observe and report on the following aspects of the behaviour and performance of