Guardian Industries - The Guardian Product Line

Return to Main Product Page

GUARDEX STYLE 'SG' STEEL GEAR
Flexible Shaft Drive Couplings

Fully Interchangeable
Coupling assemblies are fully interchangeable with other gear couplings made to AGMA standards.
Crowned Gear Teeth
Advanced CAD design ensures maximum contact at the strongest part of the tooth.
Ease of Assembly
The Guardex™ "SG" design incorporates exposed bolts with captive nuts for ease of assembly.
High Torque Capacity
With careful selections of material and optimization up to 1 million inch pounds can be achieved.

DOUBLE ENGAGEMENT COUPLINGS FOR HORIZONTAL SHAFTS
Sizes 10 to 70

The standard range of gear couplings will accommodate parallel offset, angular misalignment and axial movement, or a combination of all three.

Operating Misalignment

Size Parallel Angular

10
15
20
25

30
35
40
45

50
55
60
70 .005
.005
.010
.010

.012
.012
.012
.012

.012
.012
.012
.012 .005
.005
.010
.010

.015
.015
.020
.020

.020
.030
.030
.030

Size Torque Rating
FT# Max Speed RPM (1) Bore Dia. (2) Dimensions (3) Engineering Info

Min Max A B C D F H J M Gap Weight Lbs Inertia
# In Sec² Torsional Stiffness
In#/Rad x 10⁶

10 630 8000 .63 2.00 4.57 3.50 1.70 2.72 3.31 .55 1.54 2.00
.12
9.61 .04 21

15 1,417 6500 .94 2.50 6.00 4.00 1.97 3.39 4.13 .75 1.89 2.40
.12
19.71 .17 53

20 2,627 5600 1.10 3.13 7.00 5.00 2.44 4.13 5.00 .75 2.36 3.00
.12
29.60 .35 81

25 4,731 5000 1.38 3.81 8.39 6.25 3.03 5.16 6.10 .87 2.83 3.62
.20
58.08 .92 123

30 7,897 4400 1.65 4.50 9.45 7.36 3.58 5.98 7.13 .87 3.31 4.17
.20
87.12 1.73 177

35 12,103 3900 1.97 5.31 11.00 8.62 4.21 7.00 8.31 1.14 3.86 5.12
.24
143.00 4.00 234

40 18,376 3600 1.97 6.25 12.52 9.72 4.76 8.27 9.69 1.14 4.37 5.71
.24
211.20 7.61 481

45 25,240 3200 2.16 7.00 13.62 10.94 5.32 9.25 10.79 1.14 4.84 6.50
.32
288.20 12.30 611

50 34,169 2900 2.95 7.67 15.31 12.36 6.02 10.00 12.05 1.50 5.55 7.20
.32
409.20 22.35 983

55 44,723 2650 2.95 8.46 16.73 13.54 6.61 11.00 13.15 1.50 6.22 8.00
.32
543.40 33.89 1083

60 57,859 2450 3.15 9.25 18.00 15.12 7.40 12.00 14.44 1.02 6.65 9.00
.32
657.80 46.13 1294

70 84,132 2150 3.94 11.00 20.75 17.75 8.70 14.00 16.73 1.14 7.72 10.47
.40
1,040.60 97.39 2138

Notes:

The maximum speeds specified above are generally based on the limit of the lubricant being used. To attain these speeds a separate balance operation may be necessary depending on the requirements of the application.
Special couplings can be supplied for higher speeds or more sensitive applications.
Maximum bores specified are for uniformly loaded drives only.
All dimensions are subject to confirmation. General arrangement drawings are available which show certified dimensions.

In selecting couplings, the characteristics of driving and driven machines must be considered. Factors in Tables 1 and 2, in conjunction with the following procedure, are for general guidance and are complimentary to customers' specialist knowledge of their own equipment.

Select coupling type.
Select Service Factor (SF) from Table
Calculate required minimum rating thus:
1. Normal Service (Nominal Torque):
  
  Rating
  (HP)(63025)(SF)
  
  Ft# =
  (12)(RPM)
2. Repetitive High Peak Torque applications
  1. Non-reversing Duty:
    Rating, Ft# = Peak Torque
  2. Reversing Duty:
    Rating, Ft# = Peak Torque x 1.5
Note: Occasional peak torques of twice the catalog rating can be accommodated providing they occur less than a 1000 times during the life of the coupling.
Select coupling which has a rating equal to or above that arrived in item 3 above.
Determine maximum coupling bore from Table 1. Hub Boss Diameters are given in the dimension tables.

Check that the above max. bore is suitable for shafts. If not, go to next coupling size and repeat check.
Having found a suitable coupling to satisfy the above conditions, check that the coupling is capable of speed required.

MISALIGNMENT
KEYWAY SIZES/BORE TOLERANCES
MAX. COUPLING BORE SIZES (Table 1)

SELECTION EXAMPLES
METRIC BORES AND KEYWAYS
SERVICE FACTORS (Table 2)

Privacy Statement

Legal Notice

Another quality site by