Technical data

Progressive Systems for Commercial Vehicles for grease up to NLGI grade 2
91-9430-EN
• Electrically driven piston pumps
KFA / KFG
• Electrically driven piston pumps
KFAS / KFGS with integrated control
electronics
• Progressive feeders, groups
VPM, VPKM, VPBM
Grease systems consist of a pump, feeders
with a network of tubing and a control unit.
Progressive systems reach operating pressures
of as much as 300 bars depending on the
lubricant used, the ambient temperature, size
of the system and bearing back pressure.
Predefined amounts of lubricant are supplied
to the lubrication points while the pump is
running, the full delivery of the piston pump
being apportioned via the progressive
feeders.
Several pump strokes are required to complete
one full lubrication cycle, i.e. until each lubri-
cation point has received the amount of
lubricant intended for it.
Description of units
1. Piston pump,
Group KFG / KFGS
The pumps are driven by a DC motor. The
reservoir capacity and type of filling vary.
The pumps have a maximum of 3
lubricant outlets. One pump element is
required for each outlet. The elements are
available for different delivery rates and
can be exchanged at a later date.
The grease level is checked by a visual or
electrical (W1) inspection of the reservoir.
Group KFG pumps are controlled by an
IG502-2-E control unit.
Group KFGS pumps are controlled by a
control system integrated in the unit
(IG502-I).
Group KFA / KFAS
The pumps have a maximum of 2
lubricant outlets for the connection of 2
mutually independent lube circuits. One
pump element is required for each outlet.
The elements are available for 3 different
delivery rates and can be exchanged at a
later date.
2. Progressive feeders,
Groups VPM, VPKM, VPBM
Progressive feeders are used for grease
up to NLGI grade 2. Their design makes
it possible to adjust the feeders to the
amount of lubricant required by the
lubrication points to be connected.
When planning a system, be sure the
progressive feeders apportion the entire
amount of grease delivered by the pump
each running cycle. Thus, the metered
quan tities only define the proportions and
not the absolute quantities.
Group VPM
The following metered quantities are
available: 0.05; 0.14; 0.19; 0.25; 0.3;
0.35 cm³ (per cycle and outlet).
Adjacent outlets can be combined exter-
nally, outlets opposite each other can be
combined internally with the help of
S-sections.
Group VPKM
The following metered quantities are
available: 0.04; 0.08; 0.14; 0.18 cm³
(per cycle and outlet).
In the case of this series, the adjacent
outlets of the finished feeder can still be
combined internally without having to
dismantle the feeder.
Group VPBM
Uniform metered quantity 0.13 cm³
(per cycle and outlet).
Outlet ports opposite each other can be
combined internally; adjacent/parallel out-
let ports can be combined externally.
The lines must be connected to the feeders
via connection fittings or plug connector
fittings.
3. Lines and fittings
In systems for grease up to NLGI grade 2,
it is necessary to lay main lines in a high-
pressure hose with a 6, 8 or 10 mm diam.
connector; in special circumstances, it is
also possible to use steel tubing with
a diameter of 6, 8 or 10 mm. 6 × 1.5
polyamide tubing is used for secondary
lines, or also a 6 mm high-pressure hose
or 6 mm steel tubing in the off-road sector.
Main and secondary lines are supplied
prefilled with grease
4. Control unit
Electronic control and monitoring unit
IG502-2-E for systems with KFG/KFA
piston pumps in conjunction with a cycle
switch (see page 14).
Attention:
For “General operation instructions for pro-
gressive systems”, see 951-130-186-US.
Systems for grease up to NLGI grade 2
Important note:
Do not close outlets that are not required.
This would immobilize the feeders and
cause damages. The lubricant supplied to
these outlets must either be returned to
the lubricant reservoir or directed to an-
other lubrication point.