Page 112 - Single-line automatic lubrication systems

Metering device

Metering devices for oil G G4
321 G, T, W, G4, Module, G7

T Module

W G7

Description
Technical data
Series 321 single-port prelubrication metering devices were devel-
oped for use with single-line, centralized lubrication systems for oil Function principle metering device
and fluid grease. These metering devices are designed for installation Outlets 1
Metering quantity Model G, G4, T, W, Modular:
directly in a lubrication point, which eliminates feeding lubricant via a 0,01 to 0,10 cm 3 ; 0.0006 to 0.006 in 3
lubrication point line, as well as the lubrication line at the lubrication Model G7: 0,01 to 0,3 cm 3
0.0006 to 0.018 in 3
point. This can be beneficial where space is limited. Choose from six Lubricant mineral and synthetic oil,
types to meet application requirements. 20 to 2 000 mm 2 /s, 0.031 to 3.100 in 2 /s
fluid grease of NLGI 000, 00,0
Operating temperature 0 to +80 °C; +32 to +176 °F
Features and benefits Operating pressure min. 12 bar, 174 psi
• Specially designed, single-port metering device for prelubrication Relief pressure max. 45 bar, 653 psi
max. 3 bar, max. 43.5 psi
• For direct connection to the main line Materials steel (galvanized, Cr6-free) or brass,
• No separate lubrication line and fittings are necessary NBR , G7 FKM (FPM)
Connection main line different fittings for pipe ∅ 6 to 10 mm;
• Screw-in type can be monitored by a pressure switch
0.236 to 0.393 in or closure plugs for
in the main line; suitable for feed line ∅ 4 mm (oil) thread M 10×1
and ∅ 6 mm (fluid grease) Connection outlet pipe ∅ 4 and ∅ 6 mm;
0.157 to 0.236 in - straight compression
nut fitting
Applications - solderless pipe union (DIN 3862)
Dimensions: 321 G length: 50 mm; 1.968 in
• Machine tools ∅: 16,2 mm; 0.638 in
• Printing machines wrench size 14 mm
• Packaging industry Dimensions: 321 W length: 46 mm; 1.811 in
width: 26 mm; 1.023 in
• Textile industry ∅: 11,5 mm; 0.453 in
wrench size 10 mm
Dimensions: 321 G4 length: 40,5 mm; 1.594 in
∅: 19,6 mm; 0.771 in
wrench size 17 mm
NOTE Dimensions: 321 T length: 43 mm; 1.692 in
width: 61 mm; 2.401 in
Further technical information, technical drawings,
∅: 16,2 mm; 0.638 in
accessories, spare parts or product function descriptions wrench size 14 mm
available on SKF.com/lubrication: Dimensions: 321 Module ∅: 30 mm; 1.181 in
1-5001-EN Dimensions: 321 G7 small height or thickness: 11 mm; 0.433 in
length: 30 mm; 1.181 in
3D ∅: 10,3 mm; 0.405 in
Dimensions: 321 G7 large length: 50 mm; 1.968 in
skf-lubrication partcommunity com/3d-cad-models ∅: 13,5 mm; 0.531 in
Mounting position any

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