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K753

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  • Hydraulic Piston Sealing Elements
  • K753
K753 - Piston Seal
  • General Features
  • Technicial Specifications
   KASTAŞ NO D (H9) Ød (h9) B (-0/+0,2) r O’RING X RING
 K753-016 16 5 4,2 1 4,34X3,53 12,42X1,78
 K753-022 22 11 4,2 1 10,69X3,53 17,17X1,78
 K753-025 25 14 4,2 1 13,87X3,53 20,35X1,78
 K753-028 28 17 4,2 1 15,47X3,53 23,52X1,78
 K753-030 30 19 4,2 1 18,66X3,53 25,12X1,78
 K753-032 32 21 4,2 1 20,22X3,53 26,70X1,78
 K753-035 35 24 4,2 1 23,40X3,53 29,87X1,78
 K753-040 40 29 4,2 1,3 28,17X3,53 34,65X1,78
 K753-042 42 31 4,2 1,3 29,75X3,53 37,82X1,78
 K753-045 45 34 4,2 1,3 32,92X3,53 37,82X1,78
 K753-050 50 39 4,2 1,3 37,69X3,53 44,17X1,78
 K753-050/1 50 34,5 6,3 1,8 32.69 x 5. 44.17 x 1.
 K753-052 52 41 4,2 1,3 40.87X3.53 47.35X1.78
 K753-055 55 44 4,2 1,3 44.04.X3.5 50.52X1.78
 K753-060 60 49 4,2 1,3 47.22X3.53 53.70X1.78
 K753-063 63 52 4,2 1,3 50.39X3.53 56.87X1.78
 K753-063/1 63 47,5 6,3 1,8 47 x 5.33 56.87 x 1.
 K753-065 65 54 4,2 1,3 53.57X3.53 60.05X1.78
 K753-070 70 59 4,2 1,3 56.74X3.53 63.22X1.78
 K753-070/1 70 54,5 6,3 1,8 53.34 x 5. 63.22 x 1.
 K753-075 75 64 4,2 1,3 63.09X3.53 69.57X1.78
 K753-080 80 64,5 6,3 1,8 62.87X5.33 72.75X1.78
 K753-080/1 80 59 8,1 1,8 58 x 6.99 71.12 x 2.
 K753-085 85 69,5 6,3 1,8 69.22X5.33 75.92X1.78
 K753-090 90 74,5 6,3 1,8 72.39X5.33 82.27X1.78
 K753-095 95 79,5 6,3 1,8 78.74X5.33 88.62X1.78
 K753-100 100 84,5 6,3 1,8 81.92X5.33 88.62X1.78
 K753-100/1 100 79 8,1 1,8 77 x 6.99 88.57 x 2.
 K753-105 105 89,5 6,3 1,8 88.27X5.33 94.97X1.78
 K753-110 110 94,5 6,3 1,8 91.44X5.33 101.32X1.7
 K753-115 115 99,5 6,3 1,8 97.79X5.33 107.67X1.7
 K753-120 120 104,5 6,3 1,8 100.97X5.3 114.02X1.7
 K753-125 125 109,5 6,3 1,8 107.32X5.3 114.02X1.7
 K753-130 130 114,5 6,3 1,8 113.67X5.3 120.37X1.7
 K753-135 135 114 8,1 1,8 113.67X6,9 126.67X2.6
 K753-140 140 119 8,1 1,8 116.84X6,9 126.67X2.6
 K753-150 150 129 8,1 1,8 126.37X6,9 139.37X2.6
 K753-160 160 139 8,1 1,8 135.89X6,9 145.72X2.6
 K753-170 170 149 8,1 1,8 145.42X6,9 158.42X2.6
 K753-180 180 159 8,1 1,8 158.12X6,9 171.11X2.6
 K753-190 190 169 8,1 1,8 164.47X6,9 177.47X2.6
 K753-200 200 179 8,1 1,8 177.17X6,9 190.17X2.6
 K753-210 210 189 8,1 1,8 183.52X6,9 196.52X2.6
 K753-220 220 199 8,1 1,8 196.22X6,9 202.87X2.6
 K753-240 240 219 8,1 1,8 215.27X6,9 221.92X2.6
 K753-250 250 229 8,1 1,8 227.97X6,9 234.62X2.6
 K753-250/1 250 225,5 8,1 1,8 221.62 x 6 234.62 x 2
 K753-310 310 282 9,5 2,5 279 x 8.4 291.69 x 3
 K753-350 350 322 9,5 2,5 319.5 x 8. 329.8 x 3.

K753 is a three piece double acting sealing set which consists of one special mixture PTFE profile ring , one X-ring as for main sealing element and an O-ring as energizing element.

PRODUCT ADVANTAGES
• Wide range of temperature and chemicals depending on the o-ring and x-ring material
• Low friction , free of stick-slip
• High sealing effect in applications requiring media separation
• Low gas permeation rate
• Minimum static and dynamic friction coeffcient for a minimum energy loss and operating temperature
• Simple groove design and low axial housing heights

APPLICATION
Accumulators , heavy duty cylinders , presses and machine tools.

MATERIAL   CODE
NBR 70 SHORE A NB7001
PTFE   PT6003
OPERATING CONDITIONS
MEDIA Mineral oils    (DIN 51524) HFA ve  HFB
HFC
TEMPERATURE  -30°C   +105°C   +5°C   +60°C -30°C +60°C
PRESSURE ≤400 Bar ≤400 Bar ≤400 Bar
SPEED ≤2.0 m/sn ≤2.0 m/sn ≤2.0 m/sn

Note: The above data are maximum values and cannot be used at the same time.

    

SURFACE ROUGHNESS Ra Rmax
Sliding Surface ØD ≤0.2  μm ≤2.0 μm
Groove Base Ød ≤1.6 μm ≤6.3 μm
Groove Flanks B ≤3.2 μm ≤15 μm
Note: It is recommended to have 50% to 90% of the working surface material contact area value.

INSTALLATION
It is recommended to assembly into one piece piston with special assembly tool (See section; Hydraulic Sealing Elements General Installation Information). It is very important that the assembly tools must be of soft material and have no sharp edges. Before installation the sealing element must be oiled with system oil.

NOTES
It is recommended to use with minimum two piston guide rings in long stroke cylinders , minimum one guide ring in short stroke and low radial loaded cylinders. For special applications that require high temperatures or resistance to chemicals , piston seal is being manufactured with special mixture PTFE and FKM material. The permissible sealing gap values of K753 piston seal is given in the below table.

 
PERMISSIBLE SEALING GAP
   B (mm) Smax (mm)
  150 Bar 250 Bar 400 Bar
0.25 0.15 0.10 4.2
6.3  0.30 0.20 0.15
8.1 0.30 0.20 0.15
9.5  0.50 0.25 0.20

Note: The largest sealing gap value occurring on the non-pressurized side of the seal does have a vital importance for the function of the seal and in this respect it is quite important to use the S value lower than the above indicated numbers.

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