MSL BASES
Vibration isolation manufacturer shall furnish integral structural steel bases. Rectangular bases are preferred for all equipment. Centrifugal refrigeration machines and pump bases may be T or L shaped. Pump bases for split case pumps shall be large enough to support suction and discharge elbows. All perimeter members shall be steel beams with a minimum depth equal to 1/10 of the longest dimension of the base. Base depth need not exceed 14”(350mm) provided that the deflection and misalignment is kept within acceptable limits as determined by the manufacturer. Height saving brackets shall be employed in all mounting locations to provide a base clearance of 1” (25mm). Bases shall be type WF as manufactured by Mason Industries, Inc.
MSL - 0.75” to 1.0” Deflection
FAN WHEEL | MOTOR FRAME SIZES | Approx. Ship Wt. (lbs) | |||||
Up to 215T | 254T to 286T | 324T to 326T | 364T to 365T | 404T to 444T | |||
MOTOR HP AT 1200 RPM | |||||||
Up to 5 | 71/2-20 | 25-30 | 40-50 | 60-100 | |||
MOTOR HP AT 1800 RPM | |||||||
Dia. | Width | Up to 10 | 15-30 | 40-50 | 60-75 | 100-150 | |
12-18 | SW | ![]() |
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140 | |||
DW | ![]() |
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150 | ||||
20-22 | SW | ![]() |
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160 | |||
DW | ![]() |
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170 | ||||
24-30 | SW | ![]() |
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210 | ||
DW | ![]() |
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260 | ||
33-36 | SW | ![]() |
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330 |
DW | ![]() |
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400 | |
40-44 | SW | ![]() |
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390 |
DW | ![]() |
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460 | |
49 | SW | ![]() |
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410 |
DW | ![]() |
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510 | |
54 | SW | ![]() |
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430 |
DW | ![]() |
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520 | ||
60 | SW | ![]() |
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490 |
DW | ![]() |
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620 | ||
66 | SW | ![]() |
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530 | |
DW | ![]() |
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650 | |||
73 | SW | ![]() |
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580 | |
DW | ![]() |
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760 | |||
80 | SW | ![]() |
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680 | |
DW | ![]() |
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800 | |||
89 | SW | ![]() |
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730 | ||
DW | ![]() |
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980 | |||
98 | SW | ![]() |
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770 | ||
DW | ![]() |
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1070 | ||||
108 | SW | ![]() |
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850 | |||
DW | ![]() |
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1280 |
MSL - 1.1” to 1.5” Deflection Using A, B & C Springs
FAN WHEEL | MOTOR FRAME SIZES | Approx. Ship Wt. (lbs) | |||||
Up to 215T | 254T to 286T | 324T to 326T | 364T to 365T | 404T to 444T | |||
MOTOR HP AT 1200 RPM | |||||||
Up to 5 | 71/2-20 | 25-30 | 40-50 | 60-100 | |||
MOTOR HP AT 1800 RPM | |||||||
Dia. | Width | Up to 10 | 15-30 | 40-50 | 60-75 | 100-150 | |
12-18 | SW | ![]() |
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150 | |||
DW | ![]() |
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160 | ||||
20-22 | SW | ![]() |
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170 | |||
DW | ![]() |
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180 | ||||
24-30 | SW | ![]() |
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220 | ||
DW | ![]() |
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270 | ||
33-36 | SW | ![]() |
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340 |
DW | ![]() |
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410 | |
40-44 | SW | ![]() |
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400 |
DW | ![]() |
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470 | |
49 | SW | ![]() |
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420 |
DW | ![]() |
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520 | |
54 | SW | ![]() |
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440 |
DW | ![]() |
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530 | ||
60 | SW | ![]() |
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500 |
DW | ![]() |
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630 |
MSL - 1.6” to 5” Deflection
FAN WHEEL | DEFLECTION | Approx Ship Wt. (lbs) | |||||
Dia. | Width | 0.75″-1.0″ | 1.1″-2.0″ | 2.1″-3.0″ | 3.1″-4.0″ | 4.1″-5.0″ | |
12-27 | SW | ![]() |
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130 |
DW | ![]() |
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170 | |
30-36 | SW | ![]() |
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310 |
DW | ![]() |
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430 | |
40-49 | SW | ![]() |
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510 |
DW | ![]() |
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690 | |
54-66 | SW | ![]() |
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830 |
DW | ![]() |
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1080 | |
73 | SW | ![]() |
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880 |
DW | ![]() |
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1170 | |
81-89 | SW | ![]() |
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1870 |
DW | ![]() |
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2460 | |
98 | SW | ![]() |
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3240 |
DW | ![]() |
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4030 | |
108 | SW | ![]() |
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3660 |
DW | ![]() |
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4940 |
MSL - 0.75” to 5.0” Deflection
FAN WHEEL Dia. | Type of Drive | DEFLECTION | Approx Ship Wt. (lbs) | ||||
0.75″-1.0″ | 1.1″-2.0″ | 2.1″-3.0″ | 3.1″-4.0″ | 4.1″-5.0″ | |||
4-7 | Direct | ![]() |
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80 |
9-15 | ![]() |
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90 | |
9-15 | Belt | ![]() |
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100 |
16-22 | ![]() |
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110 | |
24-27 | ![]() |
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130 | |
30-33 | ![]() |
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150 | |
36 | ![]() |
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170 |