Motor And Switch Replacement Parts

TORQ SYNCROSNAP® CENTRIFUGALS

TORQ SYNCROSNAP®

FIGURE A

NOTE: Shaft diameter code is stamped on side of metal plate facing weights. TORQ Syncrosnap® mechanisms can be assembled with 3 or 6 weights. Our catalog recommends the best replacement configuration making it unnecessary to match the number of weights.

TORQ SYNCROSNAP®

FIGURE B

NOTE: Face spool toward you and look for shaft diameter code on metal ring which presses on shaft. TORQ Syncrosnap® mechanisms can be assembled with 3 or 6 weights. Our catalog recommends the best replacement configurement making it unnecessary to match the number of weights.

COIL SPRING

FIGURE C

NOTE: This coil spring type mechanism used by various motor manufacturers is not manufactured by TORO. It can be replaced by a TORQ Syncrosnap® mechanism for certain applications as shown in the tables. TORO replacement will look like Figure A.

TORQ SYNCROSNAP®

FIGURE D

NOTE: Shaft diameter code is stamped on side of metal plate facing weights. TORQ Syncrosnap® mechanisms can be assembled with 3 or 6 weights. Our catalog recommends the best replacement configuration making it unnecessary to match the number of weights.

TORQ SYNCROSNAP®

FIGURE E

NOTE: Shaft diameter code is stamped on side of metal plate facing weights. TORQ Syncrosnap® mechanisms can be assembled with 3 or 6 weights. Our catalog recommends the best replacement configuration making it unnecessary to match the number of weights.

FRANKLIN

 
FIGURE F

NOTE: This coil spring type mechanism used by Franklin for some appliactions is not manufactured by TORQ. It can be replaced by the TORO Syncrosnap8 mechanism for certan applications as shown in the tables. TORQ replacement centrifugal will look like Figure A.

TORQ SYNCROSNAP® CENTRIFUGALS – 60 HERTZ (USA)

HOW TO USE THIS SECTION
This section lists available centrifugals by:

• MOTOR MANUFACTURER listed alphabetically
• BORE SIZE listed in ascending order under each manufacturer

1. 1. Refer to the motor name plate to obtain the manufacturer’s name, frequency (hertz), and speed/RPM (poles) of the motor. Use the chart below for typical motor speed ranges.

      TYPICAL FRACTIONAL HORSEPOWER INDUCTION MOTOR SPEED RATINGS
      MOTOR TYPE		SYNCHRONOUS SPEED	TYPICAL FULL LOAD SPEED	TYPICAL CENTRIFUGAL MECHANISM SPEEDS
      POLES	HERTZ			CUT-OUT	CUT-IN
      2P	60	3600 RPM	3450 RPM	2600-3000 RPM	1000-2000 RPM
      4P	60	1800 RPM	1725 RPM	1300-1450 RPM	600-1000 RPM
      6P	60	1200 RPM	1140 RPM	850-950 RPM	400-700 RPM
      8P	60	900 RPM	850 RPM	650-730 RPM	350-550 RPM
      2P	50	3000 RPM	2850 RPM	2200-2450 RPM	900-1700 RPM
      4P	50	1500 RPM	1425 RPM	1050-1200 RPM	500-900 RPM
      6P	50	1000 RPM	950 RPM	700-780 RPM	330-550 RPM

   2. Centrifugals are listed under each manufacturer starting with the smallest centrifugal bore diameter. Dimension shown in the tables are +.000 inches and -.003 inches. A simple way to identify bore size is to read the bore letter code stamped on the centrifugal. (Refer to the pictures on the page above to see where the code letter is stamped.) If you are unable to read the code letter, measure the bore size, or the shaft diameter where the mech mounts in inches.
   3. Measure all dimensions including the back plate O.D., the spool O.D., and I.D.
   4. Check the NOTES column – they have SIGNIFICANT impact on switch selection.
   5. Don’t be concerned whether a mechanism has 3 or 6 weights, UNLESS specified in the NOTES column. Our suggested replacement part has taken that into account.
   6. When replacing a centrifugal mechanism, press it on the shaft with an interference fit as shown in the table below. Always check the running clearance (the distance between the actuated spool and the stationary switch buttons or contact point.) The measured Running Clearance (RC) should be duplicated when installing a new centrifugal. Improper running clearance adversely affects performance. Nominal running clearances for TORQ® centrifugals are below.

Send your specifications to info@torq.com for a quotation today.

TORQ STATIONARY SWITCHES

HOW TO USE THIS SECTION

1. This section lists all stationaries by category:
   • BEARING SIZE (202 to 208)
   • SINGLE-ARM or OTHER
   • DUSTITE

   CONTACT DIAMETER is specified by size and number of sets

2. When displaying stationaries, we always face the reed side of the board towards the reader. When there are two parallel reeds, we always orient the switch so that the contacts are toward the top of the page. We do this to communicate the type of contacts on the LH (left hand) or RH (right hand). Our abbreviations are:N.O. – Normally Open
   N.C. – Normally Closed
   D.T. – Double Throw
3. Some switches are specifified in many hardware and terminal variations. Our system generally is to provide the option with all of the terminals and hardware. There may be more than you need and it may be in an arrangement which is not suitable for a given application. However, all of the components are there and you must rearrange them to suit your application.
4. TORQ MULTIPURPOSE STATIONARY REPLACEMENT SWITCHES Every motor has a specific switch designed for it and the switch has the minimum parts and function which will do the job. In order to reduce the variety of slow moving switches which repair shops must stock, TORQ designed three replacement switches which will fit a large variety of applications with 203, 204, & 205 bearings. These replacement switches have tabs at 45° on each corner. The repairman may be required to bend a tab to a different angle or cut off excess tabs to maintain proper clearances.

• Completely Solid State – With no moving parts, SINPAC® Switches have no physical constraints to affect their operation.
• Speed Sensitive – SINPAC® Switches cut out the start winding at approximately 80 % of synchronous speed.
• Restart Capability – When motor speed drops below 50 % of synchronous speed, the start winding is brought back into the circuit to reinitiate starting torque.
• Environmentally Protected – SINPAC® Switches are immune to moisture, dust, shock, and vibration.
• Universal Design – SINPAC® Switches will work on 2, 4, 6 or more pole motors of any manufacturer. It also means that foreign and obsolete motors can be easily retrofitted with SINPAC® Switches.
• Unlimited Mounting Locations – SINPAC® Switches offer a variety of external and internal conduit box mountings and external endbell mountings. The mountings are not affected by the motor position (shaft up or shaft down). SINPAC® Switches can also be mounted at locations remote from the motor.
• Installation Instructions – Included with switches

ROTARY PHASE CONVERTER COMPONENT KITS:

Convert single phase power into three phase power with our rotary phase converter kits. Torq has customized our proven reliable products to provide you with a starting switch for a three phase motor when used as a Rotary Phase Converter. This design provides you with a highly reliable device which will “switch out” when the shaft is at the proper speed. Since it is electro-mechanical, it responds only to shaft speed – not to line surges or voltage variations. These unique kits allow you to construct your own custom converters from standard stocked components already familiar to you.

Typical Installation

1. Select electrical enclosure to house Torq kit plus any terminal strip you desire. Allow for electrical clearances to meet applicable codes. Cut hole in back of enclosure to let phaseconverter shaft pass through enclosure.
2. Mount enclosure to end bell, using stand offs if endbell doesn’t have a flat enough face. Standoff tubing can be purchased from McMaster-Carr (708) 833-0300.
3. Mount stationary switch inside enclosure on the back surface. Allow for electrical clearances to meet applicable codes. Connect wiring to switch.
4. Mount centrifugal mechanism on shaft. Slip on centrifugal mechanism so that RUNNING CLEARANCE between switch arm/buttons is in accordance with the instructive notes on the reverse side. Tighten two setscrews.

This electromechanical method eliminates the effect of line voltage variations and the complaints and warranty call backs which can occur. Use this reliable, trouble free approachand order from the table onthe back. If you have any questions, call us for technical support. Our specialized knowledge of rotational speed sensing technology is always available to you.