Description Standard series Size 16 … 100 Component series 6X, 7X Maximum operating pressure 420 bar Maximum flow 25000 l/min Features For set-up of a directional valve With integrated shuttle valve Check valve circuit Product description load error Type code load error Technical data general Size 16 25 32 40 50 63 80 100 Weight kg 1.2 2.3 4 7.4 10.5 21 27 42 Ambient temperature range NBR seals °C -30 … +60 FKM seals °C -20 … +60 MTTFD values according to EN ISO 13849 1) Years 150 1) For further details, see data sheet 08012 hydraulic Size 16 25 32 40 50 63 80 100 Maximum operating pressure Port X 1) bar 315 350 420 Port Z1 1) bar 315 350 420 Port Y depending on the maximum tank pressure of the attached directional valve Maximum flow 2) l/min 25000 Hydraulic fluid see table "Hydraulic fluid" Hydraulic fluid temperature range NBR seals °C -30 … +80 FKM seals °C -20 … +80 Viscosity range mm²/s 2.8 … 500 Maximum admissible degree of contamination of the hydraulic fluid, cleanliness class according to ISO 4406 (c) 3) Class 20/18/15 1) dependent on the attached directional valve 2) NG-dependent; see characteristic curves 3) The cleanliness classes specified for the components must be adhered to in hydraulic systems. Effective filtration prevents faults and simultaneously increases the life cycle of the components. Hydraulic fluid Classification Suitable sealing materials Standards Data sheet Mineral oils HL, HLP, HLPD, HVLP, HVLPD NBR, FKM DIN 51524 90220 Bio-degradable 1) Insoluble in water HETG NBR, FKM ISO 15380 90221 HEES FKM Soluble in water HEPG FKM ISO 15380 Flame-resistant Water-free HFDU (glycol base) FKM ISO 12922 90222 HFDU (ester base) 1) FKM Containing water 1) HFC (Fuchs Hydrotherm 46M, Petrofer Ultra Safe 620) NBR ISO 12922 90223 Important information on hydraulic fluids: For more information and data on the use of other hydraulicfluids, please refer to the data sheets above or contact us. There may be limitations regarding the technical valve data (temperature, pressure range, life cycle, maintenance intervals, etc.). Flame-resistant – containing water : Life cycle as compared to operation with mineral oil HL, HLP 30 … 100%. Maximum hydraulic fluid temperature 60 °C Bio-degradable and flame-resistant – containing water : If this hydraulic fluid is used, small amounts of dissolved zinc may get into the hydraulic system. 1) Not recommended for corrosion-protected version "J3" (contains zinc) (For applications outside these values, please consult us!) Symbols/Circuit diagrams LFA . KWB… (NG16 … 32) LFA . KWB… (NG40 and 50) LFA . KWB… (NG63) LFA . KWB… (NG80 … 100) Dimensions Sizes 16 … 50 Dimensions in mm 1 Name plate at NG16, 25, 32 2 Name plate at NG40 and 50 3 Ports Y and Z1 optionally as threaded ports at NG40 and NG50 4 Plug screw type KWB 5 Plug screw type KWA 6 Shuttle valve 7 M6 at NG16 and 40, M8 x 1 at NG50 8 Directional spool valve type 4WE 6 D… (pilot control valve), separate order 9 Directional seat valve type M-3SEW 6 … (pil
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