A- 30A- 30
TX / TXH / TXB 180S - 400L (4/07)TX / TXH / TXB 180S - 400L (4/07)
on tapered Timkenon tapered Timken
bearings (found on the mastbearings (found on the mast
and carriage main rollers):and carriage main rollers):
1.1. The bThe boltolts and ts and tappeapped hold holes mues must be cst be clealean andn and
free of oil. free of oil. (This can be done (This can be done by using a sprayby using a spray
degreaser (Zep Aerosolvedegreaser (Zep Aerosolve
or equivalent) andor equivalent) and
drying with drying with compressed air.)compressed air.)
2.2. ApApplply Ly Lococttititee
to bolt threads.to bolt threads.
3.3. GradGradualually tily tightghten the ben the boltolts usis using a crong a crossissingng
pattern.pattern.
4.4. Repeat Repeat Step Step 3 unt3 until boil bolts lts hold ahold at leat least tst the mhe mini-ini-
mum torque value indicated in the torque chartmum torque value indicated in the torque chart
below. below. Stake head at Stake head at three places wthree places with a cen-ith a cen-
ter punch.ter punch.
5.5. WheWhen bearn bearingings are res are removmoved, it ied, it is necs necessessary tary too
run a tap in the threaded holes and a die onrun a tap in the threaded holes and a die on
the bolts to remove Loctitethe bolts to remove Loctite
resresidue. idue. If If a diea die
is not available, use new bolts.is not available, use new bolts.
mast and carriage main roller assemblies)mast and carriage main roller assemblies)
TorqueTorque
MMiinn.. MMaaxx..
BBoollt t SSiizzee fftt--llbbss ((NN
mm)) fftt--llbbss ((NN
m)m)
5/16 - 185/16 - 18
77..55 1100 88..55 1122
3/8 - 163/8 - 16
1144 1199 1166 2222
7/16 - 147/16 - 14
2244 3333 2266 3355
1/2 - 131/2 - 13
3388 5522 4422 5577
5/8 - 115/8 - 11
7744 110000 8811 111100
3/4 - 103/4 - 10
113355 118833 115500 220033
T
Torque Chart - orque Chart - Nuts and BoltsNuts and Bolts
Tightening procedure for Grade 8 countersunkTightening procedure for Grade 8 countersunk
flathead bolts with internal hex drive used forflathead bolts with internal hex drive used for
retaining the slide bearing block housings (foundretaining the slide bearing block housings (found
on the mast and carriage):on the mast and carriage):
1.1. Do NoDo Not use st use startarwaswasherhers or ans or any othy other tyer type ofpe of
“locking” washer with grade 8 bolts.“locking” washer with grade 8 bolts.
2.2. GenGeneroerouslusly luby lubricricate tate the hehe head and tad and threhreads oads off
the bolt with oil before installing.the bolt with oil before installing.
3.3. GraGraduadually tlly tightighten the ben the boltolts usins using a crosg a crossinsingg
pattern until they hold at least the minimumpattern until they hold at least the minimum
torque value as indicated in the torque charttorque value as indicated in the torque chart
below.below.
4.4. In orIn order tder to acho achievieve tore torque vque valualues of tes of this mhis mag-ag-
nitude, a high quality hex bit driver tool shouldnitude, a high quality hex bit driver tool should
be used.be used.
5.5. In orIn order tder to mino minimiimize beze bendinding stng stresresses ises in then the
tool and thereby increase its life, the length oftool and thereby increase its life, the length of
the hex bit should be as short as possiblethe hex bit should be as short as possible
(e.g., Snap-On(e.g., Snap-On
“Stubby” length).“Stubby” length).
Recommended TorRecommended Torque for Countersunk Flathead Bolts que for Countersunk Flathead Bolts with Internal Hex Drivewith Internal Hex Drive
(these torque values applies only to those bolts used to retain(these torque values applies only to those bolts used to retain
the slide bearing block housings)the slide bearing block housings)
TorqueTorque
MMiinniimmuumm MMaaxxiimmuumm
BBoollt t SSiizzee HHeex x BBiit t SSiizzee fftt--llbbss ((NNmm)) fftt--llbbss ((NNm)m)
55//116 6 - - 1188 33//1166 1133 1188 1155 2200
33//8 8 - - 1166 77//3322 2200 2277 2222 3300
77//116 6 - - 1144 11//44 3300 4411 3322 4433
11//2 2 - - 1133 55//1166 6655 8888 7700 9955
55//8 8 - - 1111 33//88 111100 114499 111155 115566
33//4 4 - - 1100 11//22 226655 335599 226655 336666
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