Accelerometer Mounting Accessories

Accelerometer Mounting Accessories are provided to assist our customers with the installation of permanently mounted accelerometers. These accessories will simplify acquiring the various components required to complete the job quickly and properly.

The following list itemizes the accessories that may be required for an accelerometer installation:

1. Motor Fin Mounts
2. Accelerometer Mounting Pads
3. Acrylic Epoxy Bypacs
4. Silicone Dielectric
5. Accelerometer Mounting Studs
6. Piloted End Mill Spot Reamers
7. NEMA 4X Junction Boxes
8. Liquid Tight Connectors

Motor Fin Mounts:

New CMCP205 Motor Fin Mounts are made of 416 Stainless Steel and provide a mounting location for magnetically or permanently mounted accelerometers. Adhesive/Filler is used to mount the Fin Mounts between the cooling fins on motors where the bearing cap is inaccessible. Four (4) sizes are offered to retrofit most any motor. 50 and 100 unit Kits are available that come complete with adhesive/filler and mixing nozzles. Pads are 1" Dia. (25.4 mm), 3/8" Thick (9.5 mm) and are pretapped 1/4-28 UNF with a 32 microinch RMS surface finish. Kits are available for lots of 50 or 100 and come complete with adhesive/filler (50 ml per 10 mounts). Denote kit by adding -50 or -100 to end of part number.

Accelerometer Mounting Pads:

STI's Accelerometer Mounting Pads are used for glue (epoxy) mounting accelerometers to a prepared surface. Mounting pads are stainless steel and are 1" (2.54 cm) in diameter and either 1/4" (0.64 cm) or 3/8" (0.95 cm) thick. The pads are lapped on one side to provide an ideal surface for accelerometer mounting. The pads are also provided with a 1/4" x 28 UNF tapped hole for accelerometer mounting. The 1/4" thick version is recommended for low clearance installations or when using the combination epoxy and stud mounting method. The 3/8" thick version is recommended for installing ring mode accelerometers.

Acrylic Adhesive Bypacs:

Acrylic 406/17 Adhesive Bypacs are an easy to use solution for gluing Accelerometer Mounting Pads to a prepared surface area on the bearing housing. The adhesive is prepared inside the Bypac by removing the plastic separator and kneading together the two adhesive components. A corner of the bag is then removed to allow easy dispensing of the mixture. Each Bypac will glue one (1) Accelerometer Mounting Pad. A Material Safety Data Sheet for this product can be supplied on request.

STI Part#

Description

CMCP210

406/17 Adhesive Bypac

Silicone Dielectric:

In high frequency accelerometer applications, it is recommended by the manufacturer to apply a thin coating of Silicone Dielectric between the accelerometer and the mounting surface before mounting the accelerometer to the proper torque. The dielectric helps insure the transmittal of high frequency vibration across the mounting interface. When an accelerometer is installed in harsh or moist environments, Silicone Dielectric is also recommended for additional sealing of the accelerometer's connector. Each one (1) ounce tube of Silicone Dielectric will install approximately 50 to 100 accelerometers. When also used as a connector sealant, each tube will install approximately 15 to 25 accelerometers.

STI Part#

Description

CMCP212

Silicone Dielectric 1-oz.

Accelerometer Mounting Studs:

Accelerometer mounting studs are used to mount 1/4" thick STI Mounting Pads directly to the tapped bearing housing in combination with epoxy. The 3/4" long stud provides the proper length for mounting the pad to the bearing surface and in turn the accelerometer to the stud. Allen studs are made of stainless steel and have 1/4" x 28 UNF threads. Allen head studs are provided in packs of ten (10).

STI Part#

Description

CMCP230

10 Mounting Studs

Piloted End Mill Spot Reamer:

Piloted End Mill Aircraft Spot Reamers are used to mill a 1" (2.54 cm) smooth flat area on bearing housings. The flat area will accept a stud mounted accelerometer or a glue (epoxy) mounted with an STI Accelerometer Mounting Pad. A 7/32" drill,  pilot, allen wrench and end mill are included in each kit. The 7/32" drilled hole can then be tapped with a 1/4" x 28 UNF starter and bottom tap for stud mounted accelerometers.

STI Part#

Description

CMCP701

Piloted End Mill Kit

Indexable Counter-bore (End Mill) Kit:

Indexable Counter Bores are used just like the less expensive spot reamer shown above to mill a 1" (2.54 cm) smooth flat area on a bearing housing to mount an accelerometer. Their major advantage is that the have replaceable (indexable) Titanium Nitride cutting edge inserts. These inserts are triangular with three cutting edges per insert. Each cutting surface is very durable allowing greater machining capability over the less expensive spot reamer. Each kit comes complete with counter-bore, 10 ea. inserts, pilot, insert screw and insert key.

STI Part#

Description

CMCP710

Indexable Counterbore Kit

Accelerometer Mounting Kit (Adhesive):

The CMCP220 Kits provides all of the items necessary for adhesive mounting 10, 32, 64 or 128 accelerometers.

STI Part#

Description

CMCP220-

XX-

XX

Adhesive Mount Kits

10

10 Accelerometers

32

32 Accelerometers

64

64 Accelerometers

128

128 accelerometers

01

1/4" Mounting Pads

02

3/8" Mounting Pads

NEMA 4X Fiberglass Junction Boxes:

NEMA 4X Fiberglass Junction Boxes are designed for both indoor and outdoor use in highly corrosive environments such as paper machines and related equipment. Screw covers are hinged on one side and provided with an oil resistant "O" ring gasket. The fiberglass is easily drilled for the installation of water resistant cable entries.

Fiberglass boxes are light grey in color and are provided with mounting feet and stainless steel mounting screws.

STI Part#

Description

CMCP260-

01

6" H x 6" W x 4" D
(15.2 x 15.2 x 10.2 cm)

02

8" H x 6" W x 4" D
(20.3 x 15.2 x 10.2 cm)

03

10" H x 8" W x 6"D
(25.4 x 20.3 x 15.2 cm)

Liquid Tight Strain Relief Connectors:

Liquid Tight Strain Relief Connectors are used for making direct accelerometer or transducer extension cable entries into the junction boxes listed above. Long cable runs or cables other than the actual extension cable should be installed in conduit. Connectors are constructed of Polyamide and provide both environmental sealing and strain relief. The connectors are temperature rated to -40° to 212° F (-60° to 100° C). The connectors have a pressure rating of up to 150 PSIG.

STI Part#

Description

CMCP-261-

XX

Liquid Tight Connectors

Min. OD

Max. OD

03

0.20" (5mm)

0.35" (9mm)

04

0.28" (7mm)

0.47" (12mm)

05

0.35" (9mm)

0.70" (18mm)

06

0.51"(13mm)

0.78" (20mm)