Enerpac NC-1319 User manual

1.0 IMPORTANT RECEIVING INSTRUCTIONS
Visually inspect all components for shipping damage. If
shipping damage is found notify carrier at once. Shipping
damage is not covered by warranty. The carrier is
responsible for all repair and replacement costs resulting
from damage in shipment.
SAFETY FIRST !
Read all instructions, warnings and cautions carefully.
Follow all safety precautions to avoid personal injury or
property damage during system operation. ENERPAC
cannot be responsible for damage or injury resulting from
unsafe use of product, lack of maintenance or incorrect
product and/or system operation. Contact ENERPAC for
guidance when in doubt as to the safety precautions and
applications. TO PROTECT YOUR WARRANTY, ONLY
USE ENERPAC HYDRAULIC OIL.
2.0 GENERAL SAFETY ISSUES
WARNING: To prevent personal injury, always
wear eye protection whenever operating
hydraulic nut cutters.
WARNING: To avoid injuries and possible
damage to the nut cutter, do not use the nut
cutter on glass, plastic, wood or any other
material which would shatter.
WARNING: To prevent personal injury, do not
place fingers on or near the cutting area while
nut cutter is operating.
CAUTION: ENERPAC nut cutters are
designed specially to split metal nuts specified
in table 1. Maximum allowable hardness to be
split is HRc 44. For materials not specified in
this instruction sheet, contact ENERPAC.
CAUTION: To avoid personal injury and
damage to the nut cutter parts:
•Do not cut chains. Do not cut bolts.
•Do not use nut cutter to rotate nuts (see
illustration 4).
•Do not move nut cutter during cutting
operation (see illustration 4).
•Do not heat up nuts while nut cutter is in
position.
3.0 PRODUCT DESCRIPTION
All ENERPAC NC-nut cutters are single acting, hydraulic
advance - spring return. Hydraulic nut cutters can be
powered by ENERPAC P-392, P-142, PATG-1102N or
PUD-1100E pumps.
The nut cutter consist of a two piece threaded body, the
cutting blade, return spring, plunger, oil seal and a coupler.
See illustration 5. One spare cutting blade is delivered with
each nut cutter.
4.0 SPECIFICATIONS
See tables 1 and 2 on page 3.
5.0 OPERATION / INSTALLATION
5.1 Connect the nut cutter coupler to the hose coupler
and pump. Firmly tighten couplers by hand to prevent
restricted oil flow.
5.2 Open the vent/fill plug of the pump.
5.3 Close the pump release valve. To remove air trapped
in the hydraulic system operate the pump to advance
and retract the cutter blade several times.
5.4 Place the nut cutter over the nut. The flat surface of
the nut cutter must rest against one of the nut flats.
See illustration 2 and 3.
1
Instruction Sheet
NC-serie
Hydraulic Nut Cutters
Max. Pressure 700 bar
EIS70.105-2 12/2004
Hydraulic Technology Worldwide
index:
English Instructions ..................................................................................page...............1-3
Français Notice d’Emploi...........................................................................page...............4-6
Deutsch Bedienungsanleitung...................................................................Seite...............7-9
Italiano Manuale Istruzioni .........................................................................pagina ........10-12
Español Instrucciones................................................................................página ........13-15
Nederlands Gebruikershandleiding ...........................................................pagina ........16-18

2
WARNING: Improper positioning of the nut
cutter on the nut may cause damage to the
cutting blade. Make sure it is well positioned.
See illustration 2 and 3.
CAUTION: The cutting blade must not cut a
hardened washer or spring washer. See
illustration 2.
WARNING: To prevent personal injury do not
place fingers in the cutting area.
5.5 Hold nut cutter in position, operate pump until cutting
blade cuts through the nut. Avoid damage to the bolt
thread by stopping the pump as soon as the nut is
split. Stop pump by opening the release valve to
retract the cutting blade. Lift the nut cutter off the nut.
5.6 If you can not remove the nut after one cut, reposition
the nut cutter to the side opposite (180°) the split.
RECOMMENDATION: When cutting
stainless steel or hardened steel nuts apply
a suitable cutting fluid. The cutting fluid will
help reduce cutter blade wear and
breakage.
5.7 When ready with the job, replace the dustcaps to all
couplers.
6.0 MAINTENANCE
Before disassembling nut cutters:
WARNING: Nut cutter is spring loaded. To
avoid personal injury be careful when
disassembling. Do not remove the spring.
Hydraulic nut cutters require periodic
maintenance. Disassemble the product, clean
and lubricate all parts prior to assembling.
ENERPAC offers ready-to-use spare parts kits
for repairs and replacements. Repair Parts
Sheet is available. Contact ENERPAC for
more details.
NOTE: The pre-tensioned spring is kept in position by the
key in the plunger. To replace this spring special tooling is
needed. In this case the nut cutter must be returned to
ENERPAC. The spring is not available as a spare part.
6.1 Under water use
When nut cutter is used under water or in severe
conditions, disassemble, clean and lubricate all parts
immediately. Repaint, if necessary. If frequently used
under water repaint the nut cutter with light coloured
corrosion resistant paint.
6.2 Cutting blade removal / replacement
Sharp cutting blades will prolong the life of your nut cutter.
Replace damaged cutting blades. Blades can be
resharpened by grinding, but avoid removing more than
1,5 mm [1/16"] of material. Nicks can be removed by a
grinding stone.
CAUTION: Do not change the cutting angle.
6.3 To replace the cutting blade: see illustration 5
page 19.
NOTE: To remove the cutting blade you do not need to
disassemble the nut cutter. Just follow steps below.
1Open the pump release valve to remove hydraulic
pressure. Cutting blade to be fully extended.
2. Disconnect the nut cutter from the hose.
3Remove setscrew nr. 8.
4Remove setscrew nr. 9.
5Pull out cutting blade nr. 5.
6Inspect the blade edge and shaft for cracks, nicks and
overall sharpness.
7Re-sharpen or replace cutting blade.
8Lubricate the cutting blade and insert the blade into
the cutter body with the cutting angle sloping away
from the body.
9Install setscrew nr. 9 and tighten. Insert setscrew nr. 8
and tighten.
10 Connect the nut cutter and hose. Check nut cutter
operation by advancing and retracting the blade
several times.
11 Check pump fluid level. Add ENERPAC hydraulic oil
as required.
We recommend: Keep spare cutting blades on hand.

3
Tabel 1 - Nut dimensions to cut - illustration 1 illustration 1
Model
number
NC-1319
NC-1924
NC-2432
NC-3241
NC-4150
NC-5060
NC-6075
M6 - M12
M12 - M16
M-16 - M22
M22 - M27
M27 - M33
M33 - M39
M39 - M48
10 - 19
19 - 24
24 - 32
32 - 41
41 - 50
50 - 60
60 - 75
A
(mm)
1/4 - 1/2
1/2 - 5/8
5/8 - 7/8
7/8 - 11/8
11/8 - 13/8
13/8 - 11/2
11/2 - 17/8
A
(inch)
B
(mm)
.50 - .75
.75 - .94
.94 - 1.13
1.13 - 1.56
1.56 - 2.00
2.00 - 2.25
2.36 - 2.88
B
(inch)
illustration 4
illustration 2
illustration 3
Tabel 2 - Nut class specifications
Nut Class
DIN ISO 898
corresponding
Bolt CLass
SAE J429
Grades
4 or 5
4 or 5
5
8
9
10 or 12
10 or 12
4.6
4.8
5.8
8.8
9.9
10.9
12.9
1
1
2
5
5+
8
--
A193, B8, A307, Grade A
---
---
A325, A449
A193, B7, GB16
A490, A354, Grade 8B
A540, B21 through B24
ASTM
Grades
Spring washerSpring washer