DEAS  1178 -1:2023  
ICS: 65.060  
HS 8432.10.00 
© EAC 2023  – All rights reserved              First Edition 2023 
  
 DRAFT EAST AFRICAN STANDARD  
Agricultural m achinery  — Mouldboard ploughs — Part 1: Specification  
for animal drawn plough s 
EAST AFRICAN COMMUNITY  
 
 
 
 
 DEAS 1178 -1:2023  
2 
  
 
 
 
 
  
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 DEAS 1178 -1:2023  
Foreword  
Development of the East African Standards has been necessitated by the need for harmonizing requirements 
governing quality of products and services in the East African Community. It is envisaged that through 
harmonized standardization, trade barriers that are encountered when goods and services are exchanged 
within the Community will be removed.  
In order to achieve this objective, the Community established an East African Standards Committee mandated 
to develop and issue East African St andards.   
The Committee is composed of representatives of the National Standards Bodies in Partner States, together 
with the representatives from the private sectors and consumer organizations. Draft East African Standards 
are circulated to stakeholders th rough the National Standards Bodies in the Partner States. The comments 
received are discussed and incorporated before finalization of standards, in accordance with the procedures 
of the Community.  
East African Standards are subject to review, to keep pace  with technological advances. Users of the East 
African Standards are therefore expected to ensure that they always have the latest versions of the standards 
they are implementing .  
DEAS 1178 -1:2023  was prepared by Technical Committee EASC/TC 042, Production an d general 
engineering . DEAS 1178 -1:2023  
4 
 Agricultural m achinery — Mouldboard ploughs — Part 1: 
Specification for animal drawn plough s 
  
 
1 Scope  
This draft East African Standard specifies requirements for animal -drawn long -beam and short -beam 
mouldboard ploughs of fixed ty pe, used for tilling land.  
 
 
2  Normative references  
The following referenced documents are indispensable for the application of this document. For dated 
references, only the edition cited applies. For undated references, the latest edition of the referenc ed 
document (including any amendments) applies.  
 
ISO 2859 -1, Sampling procedures for inspection by attributes — Part 1: Sampling schemes indexed by 
acceptance quality limit (AQL) for lot -by-lot inspection  
DEAS 1182 , Agricultural machinery — Disc and moldbo ard ploughs — Test methods  
 
 
3 Terms and definitions  
For the purpose of this standard, the following definitions shall apply to both types of  the plough unless 
otherwise stated : 
 
3.1 beam  
the part that transmits the pull of animals to the plough bottom  
 
3.2 standard  
the part of the long -beam plough which connects the bottom to the beam and  to which the handle is also 
attached  
 
N.B: The beam and the standard in the short -beam plough are a single part.  
 
3.3 plough bottom  
the lower part of the plough which inc ludes the share, the mouldboard  and the landslide, all attached to 
the frog  
 
3.4 frog 
the central part of the plough to which various parts such as landslide, mouldboard and the share are 
attached  
 
3.5 landside  
the part of the lough that slides against the  furrow walls, providing lateral stability when in operation  
 
3.6 mouldboard  
the part that lifts and inverts the furrow slice  
 
3.7 share  
the part of the plough which penetrates the soil and cuts the furrow slice. It may be a single piece or may 
consist of replacement components  
 
3.8 handle  
The part for controlling and maneuvering the plough  
 
3.9 gauge wheel  
an adjustable wheel on the short -beam plough, attached to the beam by a strap, whose purpose is to 
prevent the plough from penetrating too deeply, and a lso for transportation  
 
 
 
 
  DEAS 1178 -1:2023  
4 Sizes  
 
4.1 Measurement of plough s ize 
The size of the plough shall be measured as the shortest distance between the outermost edge point of the 
share wing and a straight edge placed along the landslide covering the entire len gth of the plough bottom. 
This is shown clearly in Figure 3.  
  
4.2 There shall be four nominal sizes, on the assumption that plough size is proportional with the weight of the 
plough, namely;  
 
(i) Extra light – up to 100 mm.  
(ii) Light – over 100 mm but be low 150 mm.  
(iii) Medium – 150 mm and above, but below 200 mm.  
(iv) Heavy – 200 mm and above.  
 
 
5 Dimensions  
 
5.1 Handle g rips 
5.1.1 The height of the handle grips of the plough shall be within the range of 900 mm and 1100 mm from the 
ground level.  
5.1.2 The maximum cross -section dimension of the grip shall be between 25 mm and 50 mm and the length 
shall be not less than 125 mm.  
5.1.3 The distance between the two grips shall be between 550 mm and 650 mm.  
 
5.2 Gauge w heel 
The diameter of the gauge wheel sha ll be not less than 125 mm and its face width not less than 38 mm.  
 
 
6 Material requirements  
 
6.1 Share and share p oint 
The material shall preferably be medium carbon steel  of minimum hardness 360 Brinell  hardness  number.  
 
6.2 Beam  
The material shall prefe rably be mild steel, and the beam shall be able to bear a load of  8 Kilo -newton  without 
permanent deformation .  
 
6.2.1 A safety device shall be incorporated in the linkage so that the surface load on the beam shall not 
exceed 8 Kilo -newton . 
 
6.3 O ther comp onents of the p lough  
All other components of the plough shall be of mild steel except the gauge wheel which may be made of cast 
iron. 
 
 
7 Visual examinations  
 
The plough shall be visually inspected for workmanship. The following requirements shall be met b y both 
types of the plough except where stated otherwise.  
 
7.1 The heads of the fasteners used for securing the share and the mouldboard shall be flush with the working 
surfaces.  
 
7.2 The maximum permissible gap between the contacting edges of the mouldboa rd and the share shall be 3 
mm. 
 
7.3 The gauge whee l shall roll smoothly with ease (f or short -beam ploughs only).  
 
7.4 There shall be no blow holes in the castings.  
 
 DEAS 1178 -1:2023  
6 
 7.5 Suction  
When the plough is assembled, adequate horizontal and verticle suction shall be maintained.  
 
7.6 The form of the mouldboard shall enable smooth turning over the furrow slice.  
 
 
8 Workmanship and f inish  
 
8.1 The surface of the parts of the plough shall be evenly dressed.  
 
8.2 The plough shall be painted with anti -corrosion paint.  
 
 
9 Marking  
 
9.1 The plough shall be permanently marked with the following information:  
(i) Year of manufacture.  
(ii) Manufacturer’s name and/or trade mark.  
(iii) Size of the plough.  
 
9.2 The marking should be done on the beam.  
 
 
10 Sampling  
 
The moldboard plough shall be sampled for inspection and testing in accordance with ISO 2859 -1. 
 
 
11 Test methods  
 
The sampled plo ughs  shall be tested in accordance with DEAS 1182 . 
 
 
Figure 1  — Nomecleture of main parts of m ouldboard plough – Fixed type (Long beam – Not to scale)  
 
 
 
 
 DEAS 1178 -1:2023  
 
 
 
Figure 2  — Nomecleture of mai n parts of mouldboard plough – Fixed type (Short beam – Not to scale)  
 
 
 
 
 
 
 DEAS 1178 -1:2023  
8 
 
 
Figure 3  — Measurement of the moulboard plough and the suction clearances  
 
 
 
 
 
 DEAS 1178 -1:2023  
Bibliography  
1) KS 06 -252:1982 Specification for a nimal -drawn mouldboard plough, fixed type  
2) TZS 243:1984, Farm implements – Single furrow animal drawn plough shares – Specification  
3) TZS 244:1984, Farm implements – Method of sampling