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PUFlex GR Couplings

PUFLEX GR couplings are the three piece assembly of 2 no. Aluminium Alloy Cast Iron or Steel hubs and one Special Grade Polyurethane Spider. These three pieces are co-axially assembled to complete the PUFLEX GR coupling. After assembly these couplings becomes sufficient flexible, positive motion and power transmitting fail safe coupling elements. Due to polyurethane spider, both the metallic hubs are separated from each other to avoid there physical contact. This helps to avoid the electrical and frequency isolation of both the connected driver and driven elements.

Download PUFlex GR Couplings Catalogue

 

APPLICATION

  • Pumps
  • Cooling Towers
  • Conveyers
  • Rolling Mills
  • Hyd. Power Packs Crane
  • Hoist
  • Gear Box & Motors
  • Textile Machine
  • Special Purpose Machine And many more

BENIFITS

  • Flexible
  • No maintenance
  • No Lubrication
  • Failsafe
  • Uniform & Positive motion and power transmission
  • Electrical and frequency isolation
  • Available in Unbored
  • pilot bore and finish bore and key-ways.

HUB & SPIDER DETAILS


HUB DETAILS

  • PUFLEX GR hubs are available in Aluminium, Cast Iron and Steel Material.
  • PUFLEX GR sizes from 19 to 28 are made from Aluminium Alloy & Steel material.
  • PUFLEX GR sizes from 38 to 90 are made from Cast Iron & Steel Material.
    PUFLEX GR hubs are manufactured with high precision machining.
  • The jaws are machined with concave shape and entry chamfer for easy assembly.
  • The concave shape in jaws of hub and the convex shape on the polyurethane spider allows for better angular, parallel and axial misalignment.
  • These hubs are available in un-bored, pilot bored, finish bore & key-ways, and with different styles of clamping arrangements as per customer requirements.

SPIDER DETAILS

  • PUFLEX GR spiders are manufactured from high grade polyurethane.
  • PUFLEX GR are available in three different hardness as 64 Shore A, 92 Shore A, and 98 Shore A. This different hardness’s are made available to suit different applications. The details are as below.
The details are as below.

Spider Type Colour Material          Temperature Range ⁰ C  Available sizes Application
Shore Hardness Normal working Maximum
80 Shore A Blue Polyurethane from -50 to + 80 from -60 to + 120 PUFlex GR 19 to 90 More Vibration
92 Shore A Yellow Polyurethane from -40 to + 90 from -50 to + 120 PUFlex GR 19 to 90 Medium torque
98 Shore A Red Polyurethane from -30 to + 90 from -40 to + 120 PUFlex GR 19 to 90 More torque                  

TECHNICAL DETAILS






Dimentional details

Size  Bore Sizes  mm Overall Dimentions
PUFlex GR Minimum Maximum Outer  Hub Spider Total Length Total Length Hub Hub  Hub Space Betⁿ Spider  Isolation
Std. Hub Large Hub Dia. Dia. I.D. Std. / Large Hub Extra Long Hub Length Length Length Hubs Width Gap
d1 d2 d2 D1 d3 L Std. L1 Extra Long L1 L2 E b a
19 6 19 24 40 30 18 66 90 25 37 20 16 12 2.0
24 9 24 28 55 40 27 78 118 30 50 24 18 14 2.0
28 10 28 38 65 48 30 90 140 35 60 28 20 15 2.5
38 12 38 48 80 70 38 114 164 45 70 37 24 18 3.0
42 14 42 55 95 85 46 126 176 50 75 40 26 20 3.0
48 15 48 62 105 95 51 140 188 56 80 45 28 21 3.5
55 20 55 74 120 110 60 160 210 65 90 52 30 22 4.0
65 22 65 80 135 115 68 185 235 75 100 61 35 26 4.5
75 30 75 95 160 135 80 210 260 85 110 69 40 30 5.0
90 40 90 110 200 160 100 245 295 100 125 81 45 34 5.5


Technical Details

Size
PUFlex
GR
Rated  Torque  Nm Maximum RPM Max. Misalignment Dymanmic Torsional Stiffness Weight Kg Monnent of
Inertia
Kgm2
Axail Radial Angular 103 Nm/rad
98 Sh-A  92 Sh-A  64 Sh-D mm mm Deg 98 Sh-A  92 Sh-A  64 Sh-D
19 17 10 21 16708 1.2 0.2 1.2 2.92 1.28 S.3S 0.51 0.000121
24 60 35 IS 12100 1.4 0.22 0.9 9.93 4.86 15.11 1.1 0.000466
28 160 95 200 10100 1.S 0.05 0.9 26.77 10.9 27.5 1.8 0.00107
38 325 190 40S 8300 1.8 0.28 1.0 48.S7 21.05 70.15 2.5 0.00171
42 450 265 560 7000 2.0 0.32 1.0 54.5 23.74 79.86 3.9 0.00476
48 S2S 310 655 6350 2.1 0.36 1.1 65.29 36.7 SS.50 5.3 0.00805
55 SOS 410 625 ff500 2.2 0.38 1.1 94.97 50.72 107.92 7.9 0.01S64
65 940 625 1175 4950 2.6 0.42 1.2 129.S1 97.13 151.09 11.9 0.03071
75 1920 1280 2400 4150 3.0 0.48 1.2 197.5 113.32 240.22 18.64 0.06706
90 3600 2400 4000 3300 3.4 OS 1.2 312.2 190.09 674.52 33.64 0.22139

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