2018 Marathon Motors Catalog

MOD CENTRAL - MOTOR MODIFICATIONS

CONDUIT BOX - MOD56 (Mult. Symbol S4) Standard conduit box construction is based on the individual product description, e.g. severe duty motors always have a cast iron conduit box, while some standard duty motors come with stamped steel and others cast iron. Conduit boxes meet or exceed NEC 430.12 requirements for volume. Termination of protective or monitoring devices can be provided in a separate auxiliary conduit box or condulet. Auxiliary conduit boxes are not available on explosion proof motors. ROTATE CONDUIT BOX LEAD OPENING Standard motors have lead opening facing down toward motor base. Modifications include rotating the conduit box so the lead opening is facing the desired direction. Specify lead opening location facing conduit box. Available on non-explosion proof motors. Lead-time is 2 days. CONVERT TO CAST IRON Replacement of steel conduit box with a cast iron conduit box. This modification is available on non-explosion proof cast iron motors as marathon’s explosion proof integral stock motors come standard with a cast iron conduit box. Lead-time is 2 days. AUXILIARY BOX (Condulet) A condulet can be added to the main motor conduit box for routing of accessory leads. Available on ODP and TEFC (non- explosion proof) motors. Call for Lead-time. CONNECTIONS - MOD0 (Mult. Symbol S4) Motor connections consist of special cords, plugs, and switches added to a single phase motor. DRAINS - MOD21 (Mult. Symbol S4) Standard duty motors include a weep hole as standard, while severe duty and explosion proof motors include a brass drain/ breather as standard. These are located in the drive end bracket at the lowest point. CONDENSATION DRAIN HOLES Additional drilled holes will be made in both end brackets of TEFC motors. Not available on explosion proof motors. Lead- time is 2 days. BRASS DRAIN & BREATHER Combination self-draining and breather plugs are available on TEFC motors. Not available on explosion proof motors. Lead- time is 2 days. STAINLESS STEEL DRAIN & BREATHER Combination self-draining and breather plugs are available on TEFC motors. Not available on explosion proof motors. Lead- time is 2 days. DRIP COVERS - MOD4 (Mult. Symbol S4) Drip covers can be furnished on standard motors for extra protection from dripping liquids and falling objects when the motor is mounted in the vertical shaft down position. These covers are recommended on all open dripproof and totally enclosed motors for vertical shaft down operation. These covers have no vertical lifting provisions provided.

BRAKEMOTOR SHAFT R.P.M.

MOTOR HP

Lb-Ft @3600

Lb-Ft @1800

Lb-Ft @1200

1/4 1/3 1/2 3/4

–– ––

––

3 3 3 6 6

3 3 6 6

3 3 3 6 6

1

1 1/2

10 10

10 ––

2

BRAKE SELECTION CHART ** For normal (140%) torque rating, do not apply on motors larger than 2 HP. Reduced braking torque and/or longer Stopping times. can result from applying an undersized brake on higher HP motors. BRAKE ADDITION - TEFC This modification includes the addition of a 3,6, or 10 Lb-Ft brake to single or three phase, TEFC, 56 (5000 series model numbers) and 143/145T Frame motors. Operating voltages are 115/208-230, 208-230/460, and 575 volts. Lead-time is 3 days. BRAKE ADDITION - INVERTER DUTY This modification includes the addition of a 6 or 10 Lb-Ft brake to Black Max ® or Blue Max ® Vector Duty motors. Operating voltages are 115/208-230, 208-230/460, or 575 volts. Lead-time is 3 days. BRAKE COIL VOLTAGE (Stearns ® brakes only) Brake coil changes allow for operation of brakes at various voltages on 50 or 60 Hertz AC power supplies. Available coil voltages at 50 HZ are 110, 220, 415, and 110/220 volts. Coil voltages at 60 HZ are 115, 200, 575, and 200/400 volts. Coil voltages at 60/50 HZ are 230/190, 460/380, and 208-230/460- 190/380 volts. External brake coil lead connections will be brought out from the brake. Specify brake lead location, brake coil voltage, and supply frequency at time of order. Lead-time is 10 days. MOD NUMBER BRAKE RATING BRAKE SERIES LIST PRICE PER MOTOR

MODIFICATIONS

3 Ft/Lb 6 Ft/Lb 10 Ft/Lb 15 Ft/Lb 25 Ft/Lb 35 Ft/Lb 50 Ft/Lb 75 Ft/Lb 105 Ft/Lb

MOD3X

56,000

$653

MOD3Y

87,000

$813

VERTICAL MODIFICATION KIT (Stearns ® 87,000 brake series) Includes required hardware to accommodate vertical above (shaft down) or vertical below (shaft up) mounting.

MOUNTING

TORQUE RATING (Lb/Ft)

SHAFT UP

SHAFT DOWN

25,35

Not req’d Required

Required Required

50,75,105

Stearns is the trademark of Rexnord Industries and is not owned or controlled by Regal Beloit Corporation.

232

Prices and specifications are subject to change without notice.