IS 4931: Agricultural tractors - Rear mounted power take off Types 1, 2 and 3

17 Pages·1995·1.1 MB·English

by  Bureau of Indian Standards

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timely dissemination of this information in an accurate manner to the public.
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“The Right to Information, The Right to Live” “Step Out From the Old to the New”
IS 4931 (1995): Agricultural tractors - Rear mounted power
take off Types 1, 2 and 3 [FAD 11: Agricultural Tractors
and Power Tillers]
“!ान $ एक न’ भारत का +नम-ण”
Satyanarayan Gangaram Pitroda
““IInnvveenntt aa NNeeww IInnddiiaa UUssiinngg KKnnoowwlleeddggee””
“!ान एक ऐसा खजाना > जो कभी च0राया नहB जा सकता हहहहै””ै”
Bhartṛhari—Nītiśatakam
“Knowledge is such a treasure which cannot be stolen”

IS 4931 : 1996
~ 1U'f1fi

~ ~cj:gt· - arT~q~ qT~~ ~Cifi'-arfq)-eT~
'fV:q..
1, 2 aft~ 3
( (lf~ 'ff-u~ )
Indian Standard
AGRICULTURAL tRACTORS - REAR
MOUNTED POWER TAKE OFF TYPES 1, 2 AND3
( Third Revision)
ics
65-060-10
'Cl DIS)995
BUREAU OF INDIAN STANDARDS
MANAK BHJ\VAN. 9 BAHADUR SHAH ZAFAR MARG
NEW. DELHI 110002
October 1995 Price Groap 5
AMENDMENT NO. 1 AUGUST 2006
TO
IS 4931 : 1995 AGRICULTURALTRACTORS
REARMOUNTED POWERTAKE OFF TYPES 1,2 AND 3
( ThirdRevisio")
(Pag~ 2,Fig. 1) - Substitutethe value ofdiametersize of'OPTIONAL
HOLE' as'fjJ8.3±0.1' for 't/J8.3'.
(Page 9,Table6,SlNo.3,col7)- Substitute '89'for '289'.
(FAD 11)
RcpropphyUnit, 81S,NewDelhi.,India
Agucultural Tr.ictors and Power TIllers Secuonal C<mmiuee, FAD 32
FORI WORD
IIlls lndran Standard ( Third Revrsion ) wa-, adopted by the Bureau of Indian Standards after the
draftfinahzcd by the Agricultural Tractors and Power Tillers Sectional Committee had been approved
hy the Food and Agriculture Diviston Council.
Thr- vtandard was firvt pubhshed 10 1968 and ...ubvequcnt.ly revised 10 1977 and 1984 After the revision
01 l"lllrc-ponding LSO standard a need was felt to revise It again to align the requirements with
correvpondrng Iruernauonal standard. In this revrsion the tolerance on diameter of shaft profile of
1ype I PTO vhatt, rcqurrementv of h.irdnc...s, location of PTa and dimension of master shield are
modified Alvo ...afety requrrements a'> per IS 12219 ( Part I) 1988 and alternate clearance zone has
been Included.
In the pieparauon ofthi-, standard assistance ha.. been derived from ISO 500 1991 Agricultural tractor
rear mounted P10, Typcv 1.2 and 11smed by International Organl7dtlOn for Standardrz.irion
FOI the purpose of decrdmg whether a particular requirement of thrs standard 1~ complied WIth, the
lInal value, obvervcd or calculated, cxpresvmg the result of a test or analysis, shall be rounded off 10
accord.mce With I~ 2 1960 'Rules for rounding off numerical values ( revived)'. The number 01
vigrnfu.ant placev returned In the rounded orr value should be the same as that of the specified value 10
thr- standard
IS 493l : 1995
Indian Standard
AGRICULTURAL TRACTORS - REAR
MOUNTED POWER TAKE OFF TYPES 1, 2 AND 3
( Third Revision)
1 SCOPE Table 1 Characteristics of PTO Type~
This Indian Standard specifies requirements for ( Clause 3 I )
Types 1, 2 and 3 re.ir-mounted power take-offs
( PTO ), the clearance zones around them and
prorecuon of the power take offon agricultural PTO Nominal Numberand Type of PTO Rated
tractors. Type Diameter Splines Rotational
mill Frequenc,
2 REFERENCES nun I
(I) (2) (3) (4)
The following II dian Standard, are nece-sary
J 35 (,straight splmc-, 540
adjuncts to thr« standard
2 l5 21 Involute vplines 1000
IS No. Title 3 45 20 mvolute splines 1000
1586 1988 Method for iockwell hard
ness test ( Scales A-R-C-D-E 4.1.2 To facrhtate coupling. ch.uigc-, of shape
F-G-H-K ) ( second revision i dl the end ( for example, charnfcrmg of -plmcs )
ofthe PTO Type I profile arc adrruvsrb!e,
2102 General tolerance for drmen-
( Pal t I ) 1980 sron and form and posiuon
4.1.3 The hardened portion of the sphncs ....h,dl
Part I General tolerance for
linear and angular drrnen have .l minimum hardncs-, of 48 HRC when
vron-, ( second reVllI01I ) tested 1I1 accordance with IS 1586 . 1986.
122~9 Tractor, .md rn.ichmery for 4.2 Direction of Rotation
( PMt I ) 1988 agrrculture .md forcvtr y
1echrucal mean, for ensurmg The P10 shall rotatc clockwrve when viewed
safety r.lrt I General frorn behind the tractor.
requucments
4.3 Location
12162 Technical requrrements for
( Part I ) 1993 towing connecuons of On tr.ictors with one PTO -haft, the loc.ation (It
.igr rcultur.rl tlacto:<;: Part 1 the PTO ,IXl~ shall he wrthin the vh.ided
Hook type i ftrst tevtston ) rectangle shown 111 fig 4 ( see Table 5 ).
12162 Technical requirements for
4.4 Clearance Zone
( Pdft 2 ) 199\ towing connections of
agi rcultur.il tractorv Part 2 The clearance Zone around the PTO vhall be 111
Clevis type accordance with FIg. 5and Table 6.
12162 Techrucal requirement, for
( Part 1 ) 1994 rowmg connections of agn NOTF - 1-01 .1 11.1I)51l101) pcrrod, the Lle.H.1IKL zonc
around thL PI0 vhown In hg 6 h ncccptnbte
cultural tractors Part 3
Drawbai 4.5 Safety Related Requirements
3 TYPES 01<' POWER TAKE-OF}<' 4.5.1 The mastei shield, ..l~ vhown 111 1ig 7
and Table 7, shall be supplied by the manut.u.
3.1 The main characterrvucv of the three types
turer and shall be fixed to the lrdctor, It mav
ofPTO shall be as specified in Table I.
also be hinged and/or be .ible to vlidc. It the
4 REQUJR.EMENTS AND SPECIFICATIONS same degree of safety I~ reached, cqurvalcnt
4.1 Manufacturing Requirements protection devices ( 1'01 example. tOWlI1g hook 01
clevissupports) can be used instead ofthe mavtei
4.1.1 The dunesionv of the main PTO on
shield, In this case prOVI"1011 shall be made 1'01
agrtcultural uactors shall comply with Fig. 1,2 anchoring the PTO drive-shaft guard.
or 3 and Tables 2, 3 or Table 4 a<; appropriate.
NOTE - Tolerance d' per JS 2102 ( P.Ht 1) 1980 4.5.2 Safety requirernent-, given In IS \2239
may be apphed 10 varrou-, values ( Part I) 1993 shall abo be met.
IS 4931 1995
.,Ls
SECTION A-A
SHAn I"ROFIU
y
HUB PROFilE:
1) !--O!III di.rmctcr
,) WIth or wnhout tooth relict
,) Sue ofch.unfer 10 be choven O} the m.mufacturet
All OIIllCIl~IOI'" III nulhrnetre-,
FIll. I PTO TYPE 1
Iable 2 PTO 1ype 1 Tolerances for Splines
( C/O/lie 4.1.1 )
All 01l11CIl\1011\ ill nulhrncurs
-:
PTO T) pe t Huh Shaft
NOIllIIl,J!
o
IIllCI1\1l11l
lndivrduallv 874 Max lndrvrduallv 860 Mav
me.ivured 871 M,n me.ivurcd 8 53M'tn
re«
dune11\Il1Il
GO' plug R69 Min '(,0' ring 8 M Mux
g.tuge g,Illge
2
IS 4931 :1995
1,1min HARDENED PORTION
64mm
EFFECTIVE PORTIONOFSPLINE
BASIC PROFILES OF SHAFT
SHAFT PROFILE
HUB PROFILE
Pressureangle ex = 3()",number "I teelh =~ 21, module m = 15875(d'dmclI.t1 pilch III)
1) Sue 01chamfcr to be chosen by the manufacturer.
'I Foimdi.uncter
') Orly for tooth-based engaglllg vystern.
All dimensions In nnlhmetres.
pro
FlO. 2 THB 2
3
IS 4931 : 1995
Table 3 PTO Type 2, Toleraaces and Change Factors for Splints
( Clause 4.I. I )
All duncnsrons In rrulhrnctrcs
I
PTO Type 2 Hult Shaft
~-----I---
I I
I
NOIllIIl,11 drmenvron I
I
2494 24\14
I 2169
Mal;
Indrvtdu.illy measured 25(,5 Max !lndJVldU,I1IV measured
2520 Min 2106
Min
With '1I1prO[HloIk 'CiO' 2494 MIn-\ With approp nate 'c,o· :'.406
plug g,llIge rrng gauge Max
I
1
2\1 240 J'! IK2
<-h.ingc LILtOI II I 91(, 1-473
\~
I-
-+-- 29'38 Men .. ssoo
I
revt drmenvion \ 29'29 Mill Max
I 38·90
1. Min
,) (h.tllgc tacrorv arc taken froIn AN~I An I, Involute splsnesand insl'l'Ction
4