PTM-D

Specification

Vibration isolators for equipment which is subject to load vibrations and large external or torquing forces shall consist of laterally stable steel springs assembled into a welded steel housing assembly designed to limit vertical movement of the supported equipment.

Housing assembly shall be of fabricated steel members and consist of a load transfer plate at the top complete with tapped holes, adjusting and leveling bolts, vertical restraints,
isolation washers and a bottom plate with non-skid noise isolation pad and holes provided for anchoring to supporting structure.

Spring elements shall have a outside diameter not less than 0.8 times to the compressed height of the spring rated load. All springs shall be designed to provide a minimum of 50% overload capacity.

Vibration isolators shall be Model PTM-D, as manufactured by Tozen Sangyo Co.,Ltd.

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Description

TOZEN PTM-D series vibration isolators consist of free standing laterally stable steel springs assembled into ductile iron housing assemblies fabricated to limit vertical movement of the isolated equipments when if equipment loads are reduced or if the equipments are subjected to large external forces. Spring elements are complete with an internal adjusting and leveling bolt. Holes are provided at the upper plate for bolting to supported equipment. A 10mm thick non-skid noise absorbing rubber pad is bonded at the bottom plate with holes for bolting to the structure. All the spring elements are comply to JIS 2704 for semi-permanent use. To assure lateral stability, outside diameter of the spring elements do not less than 0.8 times of the compressed height of the spring at rated load. All the spring are designed to provide a minimum of 50% overload capacity.

PTM-D series vibration isolator are shipped with standard deflections of 25 and 50 mm, and available up to 50mm, with load capacities from 450 Kgs to 5,600 Kgs. Model PTM-D spring isolators are recommended for the isolation of vibration produced by equipment carrying a large fluid load which may be drained, such as boilers and chillers, and for the isolation of cooling towers, air cooled condensers, etc, where motion due to wind loads must be minimized.

Application

Model PTM-D mounts are typically used to reduce the transmission of noise and vibration into supporting structures from equipments carrying a large fluid load that may be drained, such as boilers and for cooling towers, which also require hold down for wind loads.

Model Rated Capacity (Kgs) Spring Constant (Kg/mm) Spring Color Operating Height (H) Dimension (MM)
(Kgs) (Lbs) A B C D E F G H
PTM-D-151M 150 330 6 ORANGE 170 172 121 137 86 16 30 88 14
PTM-D-201M 200 440 8 PURPLE (PINK)
PTM-D-301M 300 860 12 RED
PTM-D-451M 450 990 18 GREEN
PTM-D-601M 600 1320 24 SILVER
PTM-D-826M 825 1815 33 BROWN
PTM-D-976M 975 2145 39 BROWN+WHITE
PTM-D-1101M 1100 2425 44 BLUE
PTM-D-1251M 1250 2750 50 BLUE+WHITE
PTM-D-1401M 1400 3080 56 BLUE+BROWN
PTM-D-602M 600 1320 24 RED 170 180 200 156 156 20 40 118 18
PTM-D-902M 900 1980 36 GREEN
PTM-D-1020M 1200 2640 48 SILVER
PTM-D-1652M 1650 3630 66 BROWN
PTM-D-1952M 1950 4290 78 BROWN-WHITE
PTM-D-2202M 2200 4840 88 BLUE
PTM-D-2502M 2500 5500 100 BLUE+WHITE
PTM-D-2802M 2800 6160 112 BLUE+BROWN
PTM-D-3304M 3300 7260 132 BROWN 180 255 167 211 123 20 48.5 135 18
PTM-D-3904M 3900 8580 156 BROWN+WHITE
PTM-D-4404M 4400 9680 176 BLUE
PTM-D-5004M 5000 11000 200 BLUE+WHITE
PTM-D-5604M 5600 12320 224 BLUE+BROWN