Hot runner nozzle - Günther Heisskanaltechnik ...

Note:
1.4. 53
iT
Titanium washer
Screw M6,
M8, M10, (12.9)
depending on
manifold design
Nozzle type
_MT, _NT, _TT
Fig. Screw fastenings for _MT/_NT/_TT nozzles
Hot runner nozzles of the _MT/_NT/_TT type are not
screw-fastened to the manifold. The system is started
with cold-state play. Please refer to the respective heat
expansion table. In its cold state, the hot runner system
has no positive seal between nozzles and manifold.
Operating temperature must first be reached in order to
seal the system. Please provide for adequate screw
fixation of the clamping plate towards the cavity plate
close enough to the manifold with at least 2x M10 per
nozzle or, based on the length, 2x M10 per every 80 mm.
We recommend connecting with screws of the 12.9
property class.
Please use a pry bar or a nozzle extractor tool to
professionally disassemble the nozzle from the gate
bushing and/or cavity plate. See chapter 8.
Hot runner systems / manifolds
Fig. Manifold with _TT nozzle type,
screwed to the
parting line
Advantages:
• For high number of cavities and tight pitch spacing
• Easy front mounting of the nozzles -
the mold can remain on the machine for maintenance
• Two fits provide a precise positioning to the pitch
distance
• Safety due to spatial and thermal separation of the
connecting cable from the manifold
• Protection against leakage by sealing the manifold
from the cable channels om the cable channels
www.guenther-hotrunner.com
Subject to technical changes 4/11