Toshiba Motor Cross Reference Guide

A Toshiba motor crosses to an equivalent replacement when five nameplate points match: horsepower, RPM, NEMA frame, voltage and phase, and enclosure. Toshiba International Corporation builds to the NEMA MG-1 standard, so a frame match guarantees identical mounting and shaft dimensions on the replacement. The one exception is the EQP Global 841 line, which is certified to IEEE Std 841 and can only be replaced by another IEEE 841 motor.

How do you cross a Toshiba motor to a replacement?

Cross a Toshiba motor by matching five points from the existing nameplate, then confirming any spec certification the plant requires. Toshiba International builds its motors in Houston, which is why EQP Global and EQP Global 841 units are on so many Gulf Coast pumps, compressors, and cooling towers. When one fails, the Toshiba replacement is usually a factory build on lead time, and an equivalent NEMA motor is the faster path back to running.

Table 1: The five-point Toshiba motor cross

Nameplate Point	What to Read	Match Requirement
Horsepower and RPM	Rated power and full-load speed	Same HP or one size up, same pole count
NEMA frame	Frame number such as 286TS or 449TS	Exact match, including the T or TS suffix
Voltage and phase	460V or 575V, 3-phase, 60 Hz	Exact match to the supply bus
Enclosure	TEFC, ODP, WPI, WPII, XP, or washdown	Same or better ingress protection
Spec certification	IEEE 841, Class I Division 2, service factor	Equal or better. Never drop an 841 rating.

Frame dimensions are standardized, so a 286TS from any NEMA manufacturer shares the same bolt pattern and shaft dimensions. Full dimensions are in the NEMA motor frame size chart, and the reading order is covered in how to read a motor nameplate.

How do you read a Toshiba motor model number?

A Toshiba motor model number encodes horsepower, pole count, build series, and voltage in that order. Using 3002SDSB41B as the worked example:

Table 2: Toshiba model number structure, using 3002SDSB41B

Position	Characters	Meaning
First three digits	300	Horsepower. 300 HP.
Fourth digit	2	Pole count. 2-pole equals 3600 RPM, 4-pole equals 1800 RPM, 6-pole equals 1200 RPM, 8-pole equals 900 RPM.
Series block	SDS	Build series. XDS covers the smaller frames, SDS the large frames.
Voltage character	B	Supply voltage. B is 460V. C is 575V.
Trailing characters	41B, -P	Build variations and Toshiba internal designations. Do not decode past the voltage character. Read the nameplate spec grid instead.

3002SDSB41B therefore decodes to a 300 HP, 3600 RPM, 460 volt, 449TS frame, TEFC motor built to the EQP Global 841 specification.

Toshiba model numbers decoded: worked examples

Table 3: Common Toshiba model numbers and their decoded ratings

Toshiba Model	HP	RPM	Volts	Frame
3002SDSB41B	300	3600	460	449TS
3002SDSC41B	300	3600	575	449TS
3004SDSB41A	300	1800	460	449T
1002XDSB41B-P	100	3600	460	405TS
0752XDSB41A-P	75	3600	460	Per nameplate
0502XDSC44B-P	50	3600	575	Per nameplate
0302XDSB41B-P	30	3600	460	286TS
0104XDSB42A-P	10	1800	460	Per nameplate
0024XDSB42A-P	2	1800	460	Per nameplate

Frames marked "per nameplate" vary by build. Send a photo of the nameplate to Texas Belting & Supply at (888) 203-2358 and the frame will be confirmed before quoting.

Which motor line replaces each Toshiba series?

Table 4: Toshiba motor lines and equivalent stocked series

Toshiba Line	Typical Application	Equivalent Series
EQP Global® 841	Refineries, chemical plants, IEEE 841 spec	IEEE 841 TEFC motors
EQP Global® Severe Duty	Harsh plant environments, Class I Division 2	Severe duty premium efficient TEFC
EQP Global® general purpose TEFC	Standard industrial duty	Premium efficient TEFC and integral TEFC
Open drip-proof	Indoor, clean, dry environments	Open drip proof motors
EQP Global® XP	Classified and hazardous locations	Explosion proof motors
Washdown duty	Food and beverage processing	Washdown stainless steel motors
Close-coupled pump (JM and JP)	Centrifugal pump packages	Close-coupled pump motors
Mill and chemical duty	Aggregate, crushing, pulp and paper	Crusher duty motors
EQP Global® IEC	Metric frames on imported equipment	Quoted to spec. Call (888) 203-2358.
Medium voltage, WPI, WPII, 587 frame	Above 500 HP or above 600 volts	Quoted to spec. Call (888) 203-2358.

Four mistakes that break a Toshiba cross

1. Reading the voltage character wrong

B is 460 volts and C is 575 volts. 3002SDSB41B and 3002SDSC41B are the same 300 HP motor on different supply voltages. A 460 volt motor installed on a 575 volt bus will fail quickly. This is the most common Toshiba cross error.

2. Substituting a severe duty motor for an 841

IEEE Std 841 governs vibration limits, bearing life, corrosion protection, and electrical design. A general purpose severe duty motor can match all five nameplate points and still fail the plant specification. If the failed motor carries the 841 designation, the replacement must carry it too.

3. Ignoring the TS shaft suffix

A NEMA frame ending in TS, such as 449TS, has a shorter and smaller diameter shaft than the equivalent T frame. TS frames are standard on 2-pole motors and are designed for direct coupling only. A TS motor cannot drive a sheave or a belt drive. If the application is belt driven, the cross needs a T frame and a correctly bored sheave to match.

4. Missing a stretched frame on large 2-pole crosses

At 300 HP and 3600 RPM, replacement motors often land in a stretched L449TS frame rather than a standard 449TS. The bolt circle matches but the overall length does not. Confirm the C dimension against the existing baseplate before the motor ships, because a large frame motor is freight-only and not worth returning.

Frequently Asked Questions

Are WorldWide Electric motors interchangeable with Toshiba motors?

Yes, where the five nameplate points match: horsepower, RPM, NEMA frame, voltage and phase, and enclosure. Both brands build to NEMA MG-1, so a 286TS TEFC motor from either manufacturer shares the same mounting and shaft dimensions. The exception is certification. A Toshiba EQP Global 841 is built to IEEE Std 841, and a general purpose severe duty motor is not a like-for-like replacement for it even when all five points align.

What does the Toshiba model number 3002SDSB41B mean?

3002SDSB41B is a 300 HP, 3600 RPM, 460 volt, 449TS frame, TEFC motor built to the Toshiba EQP Global 841 specification. The first three digits are the horsepower, the fourth digit is the pole count where 2 equals 3600 RPM, SDS is the large frame build series, and B is the 460 volt code. Match those specifications plus the IEEE 841 requirement when crossing it.

What does 841 mean on a Toshiba EQP Global motor?

The 841 refers to IEEE Std 841, the petrochemical industry specification for severe duty motors. It sets requirements for vibration limits, bearing life, corrosion protection, and electrical design. Motors carrying the designation use cast iron frames, stainless steel hardware, and inverter-rated insulation. If a plant specification calls for 841, the replacement motor must be 841 certified, and that changes both the available lines and the lead time.

What is the difference between a Toshiba model ending in B and one ending in C?

The letter is the voltage code. B is 460 volts and C is 575 volts. Model 3002SDSB41B and model 3002SDSC41B are otherwise the same 300 HP, 3600 RPM, 449TS frame motor. Plants running 575 volts are common in Canada and in some older Gulf Coast facilities. Always confirm supply voltage against the nameplate before ordering.

Can a 449TS frame motor be used on a belt drive?

No. The TS suffix designates a short shaft with a reduced diameter, intended for direct coupling only. A 449TS motor does not have enough shaft to carry a sheave, and mounting one on a belt drive will overload the shaft and the drive-end bearing. If the application is belt driven, cross to a 449T frame instead and verify the sheave bore matches the T frame shaft diameter.

How do I identify a Toshiba motor if the nameplate is unreadable?

Measure the frame first. Shaft height from the base to shaft centerline, shaft diameter, and the mounting bolt spacing identify the NEMA frame number, which fixes most of the remaining specifications. Then confirm supply voltage at the disconnect and count the conduit box leads. Photograph the motor and the driven equipment and call Texas Belting & Supply at (888) 203-2358, and the frame will be identified from the dimensions.

How long does a replacement for a large frame Toshiba motor take?

Small and mid frame equivalents ship the same or next business day from the Houston warehouse. Motors above 250 HP are built to order by every manufacturer, including Toshiba, so lead time depends on current factory schedule rather than a catalog figure. Call (888) 203-2358 for a confirmed date and freight quote before committing to a shutdown window.

Related Resources

• Motor cross-reference hub
• Baldor motor cross reference guide
• How to read a motor nameplate
• NEMA motor frame size chart
• All electric motors

All manufacturer names, brand names, and part numbers are trademarks of their respective owners and are used for identification and compatibility reference only. Texas Belting & Supply is not affiliated with Toshiba International Corporation. Replacement suitability should be confirmed against the original nameplate. Call (888) 203-2358 and the cross will be verified before you order.