Flow limiter SMB 3

For circulating oil lubrication systems

The SMB 3 flow limiter is designed to divide the flow in a main pipeline into separate parallel streams. This flow is created independently of changes in system pressure and is virtually independent of viscosity, ensuring a constant flow rate.

SMB 3 provides flow rates from 6 to 38 l/min (12.6–80.3 pints/min) and a pressure range of up to 200 bar. The flow limiter monitors oil flow using a signal transmitter or piston sensor. These indicators generate a fault signal when the flow rate drops to approximately 85 %.

The SMB 3 flow limiter is the ideal solution for applications with changing ambient temperatures and the need for a stable oil flow, such as circulating oil lubrication systems.

Features and Benefits

  • Stable oil consumption regardless of changes in pressure, temperature or viscosity
  • There is no need to regulate the pressure in the system, a pressure relief valve is sufficient
  • Easy monitoring with a signal transmitter
  • Easy start-up with a fixed flow rate pre-set by selecting the nozzle size
  • Adaptation of flow rate using plug-in nozzles
  • High operating temperature up to +100 °C
  • Optional ATEX Ex II 3 cII CT6
  • Extremely robust construction

Application areas

  • Mining, cement and oil and gas industries
  • Machines for metal forming, machine tools
  • Pulp and paper industry
  • Industrial gearboxes

Description

Technical specifications
Operating principle flow limiter
Exits 1
Lubricant environmentally friendly mineral and synthetic oils
Viscosity 20–600 mm2/With
Consumption1) 6–38 l/min 12.6–80.3 pints/min
Operating temperature from 0 to +100 °C from +32 to +212 °F
Working pressure 5–200 bar 72–2900 psi
Differential pressure >5 bar >72 psi
Material gray cast iron, galvanized
Input connection M12×1; four-pin connector
Protection class IP 65
Signal sensors E4/E5 24V to 230V AC/DC; IP 65
E6 proximity switch 12 to 36 V DC current; IP 67
Dimensions min. 40 × 90 × 138 mm
max. 40 × 90 × 245 mm
1.57 x 3.54 x 5.43 inches
1.57 x 3.54 x 9.63 inches
Installation position any, preferably vertical
Ordering information
The product can be configured using a configuration code. The flow rate must be adjusted according to the insert nozzle size, as shown in the table below.
24-2703-0… SMB03 without monitoring, … plug-in nozzle size = see table below
24-2703-6… SMB03 with piston sensor E6, … insert nozzle size = see table below
24-2703-7… SMB03 with E4 signal transmitter, … insert nozzle size = see table below
24-2703-8… SMB03 with signal transmitter E5, … plug-in nozzle size = see table below
ATEX versions are available upon request, ATEX only (EX II 3cII CT6), without monitoring or with an E5 signal transmitter. Add "ATEX" to the end of the part number.
More detailed information is provided in the product catalogue.
Plug-in nozzle SMB 3
Part number Consumption Nozzle
l/min pints/min ∅ mm
250 6,00 12,6 2,50
260 6,50 13,7 2,6
270 6,75 14,2 2,7
280 7,00 14,8 2,8
290 7,50 15,6 2,9
300 8,00 16,9 3,0
310 8,75 18,5 3,1
320 9,25 19,5 3,2
330 9,75 20,6 3,3
340 10,50 22,1 3,4
350 11,00 23,2 3,5
360 11,50 24,3 3,6
370 12,00 25,4 3,7
380 12,75 26,9 3,8
390 13,50 28,5 3,9
400 14,00 29,6 4,0
410 14,75 31,1 4,1
420 15,50 32,8 4,2
430 16,00 33,8 4,3
440 16,75 35,4 4,4
450 17,50 26,9 4,5
460 18,00 38,0 4,6
470 18,75 39,6 4,7
480 19,50 41,2 4,8
490 20,25 42,8 4,9
500 21,00 44,4 5,0
510 21,75 45,9 5,1
520 22,50 47,6 5,2
530 23,25 49,1 5,3
540 24,00 50,7 5,4
550 25,00 52,8 5,5
560 26,00 54,9 5,6
570 27,00 57,0 5,7
580 28,00 59,1 5,8
600 30,00 63,4 6,0
650 34,00 71,9 6,5
690 38,00 80,3 6,9
Accessories
Part number Description
24-0404-2119 Seal kit
24-1072-2113 E4 signal transmitter without contact connector
24-1072-2115 E4 Signal Transmitter with Contact Connector, with LED 24VDC
24-1882-2151 E4 connector with 24VDC LED
24-1072-2112 E5 signal transmitter without contact connector
24-1072-2114 E5 Signal Transmitter with Contact Connector, with LED 24VDC
24-1882-2121 E5 with contact connector, without LEDs
24-1884-2282 Piston sensor E6
179-990-371 straight connector, four-pin, M12×1
179-990-372 angular connector, four-pin, M12×1
179-990-600 straight connector, four-pin, M12×1, with 5 m orange cable
179-990-601 Angled connector, four-pin, M12×1, with 5 m orange cable
84-8011-0369 group monitoring unit
Spare parts
Part number Description
24-1883-2081 SMB 3 without nozzle, without signal transmitter