Fein ASb 53-2 - User Manual

(
ASb 53-2
To be handed to the workshop!
Operating instruction
for the Impact Wrench type ASb 53-2 (D.C. and A. C.
single phase) and ASb 53-2K (42 Volts)
Technical data
Type of current : ~ ; ,...., (D.C. and A.C. single phase)
For
screws Square
Sp eed R.P.M . Ta ps
Input I
Ou t- Net w eigh t
Ty
pe
standard
I
high ten sile
dri v e
full
I
no
p. M.
put
up to
up to
AS b 53-2
M 22
(1 /s") M 18 (
3
/4'')
A Sb 53-2 K (42 Volts)
1. C on struction
Th e t oo l is dri ve n by a ro bus t, fan- c ooled AC/DC motor m ount ed
in an e xtr a -r igid light alloy housing. T he co mp ac t planetary
reduction gearing is robust and silent in operation . Th e well-
balanced percussion mechanism is totally enclosed in the tool-
head casing and is easily removed . The tool ho ld er co mpli es
w
ith int e rn a ti o nal s tandards and has a
3
/
4" (19 mm) square drive.
2. Rev ersing the drive
is done by m ea ns of th e reve rs in g ring (1 4) mo un te d on th e
motor housing. Turn reversing ring only when tool is switched
off, otherwis e commutator and windings will be damaged.
3. Mode of operation
Th e mot or dri ves th e to ol hold er w ith to ol a tt ac hed vi a ge arin g,
d
rive sp indl e a nd p ercuss i on m ec ha nism. The di rect dri ve of
a
pp ro x. 1,100 r.p.m. is cut o ut as so on as th e screw or n ut h as
be en roughly run down. Once the motor reaches its ra t ed lo ad,
the percussion m ec hanism comes into operation and converts
the driv e forc e of the motor - which continues to run at uniform
speed - int o an int e rmittent torqu e applied at the rat e of 1,500
r.p .m., i.e. two str okes for each revo lu t ion of th e dr ive s pindl e.
Sc r ews a nd nuts ar e sl acke n ed in re ve rs e or d er: fir st p erc us si on
st rokes , follo we d by d irect d ri ve . Th e t oo l is ve ry ea sy to
h
an dl e, as t he op era tor ne eds not e xert a ny r es tr aining tor qu e.
As the clutch w ill always disengag e as soon as the ra te d load
is attain ed, th e mo tor cannot be ov e rl o ad ed.
4.
Application
The fu ll tightening or slackening action pro v ided depends on
th e tim e during which th e pe rcussion mechani sm is allowed to
run. Max. tig hte nin g to rq ue is th e s um of the to rqu e ap pli ed by
each stroke. According to the type of screwed connection the
max. torque will generally repre se nt betw e en 80 and 150 single
torqu e st ro kes , whi ch are appli ed in 3 to 5 se c ond s. Av ail a bl e
m
ax. torque in norm al servi ce is 185 lbs. ft. (26 kpm) (see di a-
gr
am m p. 4) .
Th
ere is no p oi nt in app ly in g th e tool f or l onge r th an 5 sec ond s
sin ce the torq ue w ill not in crease any furth er, w hil e the tool
BE 176/e BX 11. 64 Pr int ed in German y
i n.
3f,,
l oa d lo ad
in Wa tt s lbs
I
kg
- -
I
I I
750
1400
I
1500
I
480 280
I
11.1 5.0
I
I
I
head will appreciably heat. O ve rhe a ting w ill lead to incr ea sed
wea r of all percu ss ion com p one nts and excessive lubri can t con -
s
ump tio n. Mor eover, such ove rh eat in g w ill make th e too l too
hot to handle .
It is no t ad v isable to u se att ac hments ex c ee di ng 4.5 lbs in
w
eigh t, s in ce tqe t ee l hol d er se ati ng is not design ed for su ch
loads. I Use U n iv er sa l Gre~se typ
13
Sst 1
! l ns • ..,a o r;f o~ ""r t'/.C:: ' -·.f ,•r ,
5
1
5. Maintenance and · lubrication ·· -
8
T hi s w ill depe nd on the d ut y. Th e fo llo w ing ins tru ctio ns are
for co nti nuous use in 8- hour day with actual t ool running time
repr es en ti ng 2 0° /o of total duty period . The tool hold er (78)
should be lubricat ed ev ery ot her day by me ans of the oil er (81 )
at the h ea d (79). U se mac h in e oil or thin-flo wi ng grease . T he
pe rcu ssion me ch a nism sho uld be comple te ly cl ea ned of old
grea
se at l east eve ry 300 h ours ( ap prox. 6 weeks) . For th is pu r-
pose r
emove th e thr ee sc r ews (82), th en take off the o ut er bea r-
ing (7 9) a nd li .f t the p er cu ss ion m ec h anism ou t of the in ter -
media te bearing without taking it apart.
Then app ly grease libe ra ll y to the impact fac es of parts (7 6) a nd
(78) (3 0 to 40 g or about 1 to P/2 oz.). Ball pi vo ts a nd plan e tar y
ge
arin gs s hould also be gr e ase d w ith FK 3. FK 3 is a high-gr ade
qua li ty gr ease a nd is su itable for a ll percu ssio n m ec h anism
parts beca use of its go od h e at re si stan ce and ad he ren ce . Ba ll
b ea ri ng gr ea se p ac kin gs sh ou ld also be re pl en ishe d wit h FK 3.
Should the per c ussion me chan i sm jam or run i rr eg ul arl y in spite
of ad e qu ate lubrication and re gul ar maint ena n ce , the combin ed
dri v e asse mbly sh o uld be t ak en out as de sc ri bed und er par a-
gr a ph 7, a nd th e indi v idu al pa rts should be t ested . Fr e qu en tl y,
ho wev er, un eve n runni ng is cau sed by wear , i.e. imp act dogs
which h ave b eco me ra di use d, or re l axatio n of spr in g (75). so
that sp ring p ress u re weake ns. W or n d ogs can be regro und. Max.
tigh t en i ng or slackening torque can onl y be obtained w ith a
tool app ly ing uniform st ro k es along the axis .
Carb on brushes (17) shoul d be che cked at inte r va ls of ab o ut 6
w
eeks and re pl ace d if appr eci abl y wo rn d ow n (when co mpl e-
tely
worn d ow n th ey w ill be 7 mm [1 /4" ] long). In or d er to re-
pl
ac e th em take off ca rb on h old er caps (1 6) . Rep l ace bru sh es in
ti me to avo id dam age to t he co mmut at or .

Summary

Technical Data and Specifications

Tool Operation and Features

1. Construction

Details the robust fan-cooled motor, light alloy housing, planetary reduction gearing, and enclosed percussion mechanism.

2. Reversing the Drive

Explains the operation of the reversing ring and warns against switching while the tool is on.

3. Mode of Operation

Describes how the motor, gearing, and percussion mechanism work together for driving screws.

4. Application Guidelines

Covers how tightening torque is achieved and provides advice on application time and overheating.

5. Maintenance and Lubrication

Provides guidance on lubrication, cleaning the percussion mechanism, and checking carbon brushes.

Dismantling and Assembly Procedures

6. Dismantling Steps

Outlines the step-by-step process for disassembling the tool, including removing housing and internal parts.

7. Assembly Instructions for Percussion Mechanism

Details the combined drive assembly, focusing on the percussion mechanism and its components.

Parts Lists and Diagrams

Parts List (Standard Screws)

Lists part numbers, references, quantities, and descriptions for standard screw applications.

Parts List (Low Tension 42 Volts)

Lists part numbers, references, quantities, and descriptions for 42 Volt low tension applications.

Accessories List

Details available accessories such as hexagon attachments and securing pins.

Performance Diagram and Usage

Tightening Action Diagram

Illustrates the destination of favorable time of tightening action for different screw types and sizes.

Fein ASb 53-2 Specifications

General

Brand	Fein
Model	ASb 53-2
Category	Impact Driver
Language	English