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Shaft Couplings
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GUARDEX 'LJW' STRAIGHT JAW COUPLING | GUARDEX TAPERED GRID COUPLING
GUARDEX 'SWJW' WRAP CHANGE-IN-PLACE JAW COUPLING | GUARDEX CURVED JAW COUPLING
GUARDEX DISC MEMBRANE COUPLING | GUARDEX 'SG' STEEL GEAR | OIL BURNER COUPLINGS

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GUARDEX
Series "M"
Flexible Shaft Drive Couplings

The Series "M" line features 1/4" to 3 3/4" bores, 1/2 HP-294 HP. This double crowned tooth gear coupling provides free axial movement, low friction and minimum stress during misalignment. Lubrication free nylon sleeve. The steel hubs are available with metric bores & keyways, tapered bores, or SAE splines.

They also have blind assembly, free axial travel and splined/metric bores.



Guardex M-Style

FEATURES OF THE GUARDEX COUPLING
  • Double crowned tooth design provides free axial movement, low friction and minimum stress during misalignment. Designs are available with up to 3/8" axial travel.
  • Molded nylon sleeve with high torsional stiffness, free from any internal frictional losses or heat build-up. A torsionally stiff coupling with minimum backlash.
  • Nylon and steel components allow high ambient temperature operation without lubrication or maintenance. Continuous operating ambients in the ranges between (-) 13ºF and (+) 180ºF. Heat stabilized polyamide available for temperatures up to (+) 250ºF.
  • Nylon sleeves resistant to dirt, moisture, most chemicals and petroleum products. No lubrication, seals or retainers to maintain. Easy clean-up and visual inspection.
  • Compact and lightweight design with high torque and low inertia. Minimum shaft gap for close-coupled applications.
  • Precision molded concentric sleeve and hubs for high speed applications. No bolts, pins, flanges or protrusions to affect balance or safety. Smooth exterior surface.
  • Blind assembly with slip-together components for easy inspection and adjustment without disassembly.
  • Metric, Standard, Splined bores available.

DIRECTLY INTERCHANGEABLE WITH BOWEX* COUPLINGS

* Kupplungstechnik GmbH


DOUBLE CROWNED TOOTH

Double Crowned Tooth

  • Large contact area to provide low contact pressure and to reduce stress of shaft misalignment.
  • Load distributed near the center of the tooth for maximum strength.
  • Low friction for a smooth flow of power without the need for lubrication - maintenance free.
  • Free axial movement of the coupling parts to compensate for shaft thermal changes and future alignment problems.

ALIGNMENT TOLERANCES

 Type Axial Displacement Parallel Offset Angular Misalignment Recommended Hub Spacer Gap
M-Style (three piece) ± .040" .016" / hub 1º / hub .0625" / hub


 Series M-Style
AXIAL
DISPLACEMENT
PARALLEL OFFSET ANGULAR MISALIGNMENT

COUPLING SELECTION

 Guardex Coupling Number Nominal Torque
Inch Lbs.
Maximum Torque
Inch Lbs.
Nominal HP @ 1750 RPM Nominal HP @ 1140 RPM Max. RPM
M-14
M-19
M-24
M-28
M-32
M-38
M-42
M-48
M-65
M-80
M-100
86
138
173
390
520
694
868
1,215
3,298
6,000
10,600
173
277
347
781
1,041
1,388
1,736
2,430
6,596
12,000
21,000
2.5
3.7
4.5
10.5
14.5
22.0
24.0
30.0
90.0
165.0
294.0
1.5
2.5
3.2
7.0
9.5
125
16.0
22.0
60.0
110.0
191.0
14,000
11,800
10,600
8,500
7,500
6,700
6,000
5,600
4,000
3,150
3,000
  1. Nominal torque ratings allow for 180° F ambient, full misalignment and/or maximum RPM.
  2. Starting torque and braking loads should not exceed listed maximum torque.
  3. Intermittent, transient peak loads should not exceed three times nominal torque.
  4. Applications with uniform loading, well-aligned shafts, and low speeds will allow for operation at maximum torque levels.


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