Makita DTW1001ZJ User Manual

12 ENGLISH
Model DTW800
Proper fastening torque for standard bolt
N•m
(kgf•cm)
1
1
02
3
0
400
200
(2040)
(4080)
M20(3/4″)
M20(3/4″)
M24(1″)
M24(1″)
2
1. Fastening time (second) 2. Fastening torque
Proper fastening torque for high tensile bolt
1023456
0
800
600
400
200
(2040)
(4080)
(6120)
(8160)
N•m
(kgf•cm)
1
2
M22(7/8″)
M20(3/4″)
M20(3/4″)
M16(5/8″)
M16(5/8″)
M22(7/8″)
1. Fastening time (second) 2. Fastening torque
NOTE: Hold the tool pointed straight at the bolt or nut.
NOTE:Excessivefasteningtorquemaydamagethe
bolt/nutorimpactsocket.Beforestartingyourjob,
always perform a test operation to determine the
proper fastening time for your bolt or nut.
NOTE: If the tool is operated continuously until the
battery cartridge has discharged, allow the tool to rest
for 15 minutes before proceeding with a fresh battery
cartridge.
Thefasteningtorqueisaffectedbyawidevarietyof
factorsincludingthefollowing.Afterfastening,always
check the torque with a torque wrench.
1. Whenthebatterycartridgeisdischargedalmost
completely, voltage will drop and the fastening
torque will be reduced.
2. Impact socket
• Failuretousethecorrectsizeimpactsocket
will cause a reduction in the fastening torque.
• Awornimpactsocket(wearonthehexend
or square end) will cause a reduction in the
fastening torque.
3. Bolt
• Eventhoughthetorquecoefcientandthe
class of bolt are the same, the proper fasten-
ing torque will differ according to the diame-
ter of bolt.
• Eventhoughthediametersofboltsarethe
same, the proper fastening torque will differ
accordingtothetorquecoefcient,theclass
of bolt and the bolt length.
4. Theuseoftheuniversaljointortheextension
bar somewhat reduces the fastening force of the
impact wrench. Compensate by fastening for a
longer period of time.
5. Themannerofholdingthetoolorthematerial
of driving position to be fastened will affect the
torque.
6. Operating the tool at low speed will cause a reduc-
tion in the fastening torque.
MAINTENANCE
CAUTION: Always be sure that the tool is
switched off and the battery cartridge is removed
before attempting to perform inspection or
maintenance.
NOTICE: Never use gasoline, benzine, thinner,
alcohol or the like. Discoloration, deformation or
cracks may result.
TomaintainproductSAFETYandRELIABILITY,
repairs,anyothermaintenanceoradjustmentshould
beperformedbyMakitaAuthorizedorFactoryService
Centers, always using Makita replacement parts.

Makita DTW1001ZJ Specifications

General

Type	Impact Wrench
Power Supply	Cordless
Voltage	18 V
Torque	1000 Nm
Weight	3.5 kg (without battery)
Battery Type	Lithium-ion
Max Torque	1000 Nm
No Load Speed	0 - 1, 800 rpm
Drive Size	1/2 inch