Vortex X-Series Worm Gear Reducers

The Vortex X-Series is a single-reduction worm gear speed reducer with a NEMA C-face input flange and a solid output shaft, available in eight unit sizes from X133 (1.333-inch center distance) through X325 (3.250-inch center distance) and eight ratios from 5:1 through 60:1. It is the default Vortex worm gear configuration for fractional-to-medium-HP applications driven by a standard NEMA C-face electric motor: conveyors, mixers, packaging lines, and OEM machinery.

Quick Reference	Specification
Series	Vortex X-Series worm gear speed reducer
Available Sizes	8 sizes from X133 (1.333" center distance) through X325 (3.250" center distance)
Available Ratios	5:1, 10:1, 15:1, 20:1, 30:1, 40:1, 50:1, 60:1
Output Shaft	Solid, with keyway
Housing	Cast iron, painted finish, sealed for indoor and protected outdoor use
Max Input Speed	1,750 RPM (standard NEMA motor speed)
Mounting	Nema c-face input flange; foot-mount or flange-mount kit available
Country of Origin	Manufactured for the Vortex Speed Reducers product line

About the Vortex X-Series

The X-Series is built around a single-pair worm-and-gear arrangement housed in a cast iron case. The worm is on the high-speed input shaft coupled to the motor through the C-face flange, and the output is a solid steel shaft running perpendicular to the worm at 90 degrees. The 1.333-inch center distance on the X133 refers to the perpendicular distance between the worm centerline and the output shaft centerline, and that dimension is the primary spec used to cross-reference Vortex against competitive worm gear reducers from Baldor, Boston Gear, Dodge, Falk, Hub City, and others. Each X-Series unit ships with the housing prepped for foot mounting; a flange adapter is available as an accessory.

In service, a Vortex X-Series reducer is coupled directly to a motor on the input side, with the driven load coupled to the output shaft. The worm-and-gear arrangement provides fixed-ratio speed reduction with quiet operation and inherent self-locking at higher ratios. A X325 at 60:1 cannot be back-driven by its output, which makes it well-suited for hoists, lifts, and applications where coast-down or load drop-back must be prevented.

Available Sizes and Capacities

The X-Series is available in eight unit sizes. Unit size corresponds to center distance, the perpendicular distance between the worm shaft centerline and the output shaft centerline, in thousandths of an inch. A X133, for example, has a 1.333-inch center distance.

Model	Center Distance	Motor Frames	Output Torque @ 10:1, 1750 RPM	OHL Capacity	Weight
X133	1.333"	56C	247 in-lbs	300 lbs	13.2 lbs
X154	1.540"	56C	327 in-lbs	450 lbs	15.4 lbs
X175	1.750"	56C	515 in-lbs	650 lbs	19.8 lbs
X206	2.062"	56C	935 in-lbs	700 lbs	28.6 lbs
X237	2.375"	56C, 140TC	1158 in-lbs	900 lbs	37.4 lbs
X262	2.625"	56C, 140TC	1445 in-lbs	1000 lbs	48.4 lbs
X300	3.000"	56C, 140TC, 180TC	1833 in-lbs	1100 lbs	66.0 lbs
X325	3.250"	56C, 140TC, 180TC	2419 in-lbs	1200 lbs	74.8 lbs

Torque values shown are mechanical output torque at 1,750 RPM input. OHL = Overhung Load capacity at the output shaft. Full HP and torque ratings at 1750, 1150, 690, and 100 RPM input speeds are listed on each product page.

How to Read a Vortex X-Series Part Number

Vortex part numbers follow a structured format. Take X133-10-56C-L as the example:

Segment	Meaning
X	Series identifier (X = solid output shaft)
133	Unit size, equal to the center distance in thousandths of an inch (133 = 1.333")
10	Nominal gear ratio (10:1)
56C	NEMA C-face motor frame the input flange accepts
L	Output shaft direction: L = left-hand, R = right-hand, LR = double-ended

Applications

Vortex X-Series reducers are used in fixed-speed, fractional-to-medium-HP power transmission applications. Typical installations include:

• Belt and chain conveyors in packaging, food processing, and material handling lines
• Mixers, agitators, and batch process equipment for paint, food, and chemical production
• Indexing tables, rotary dial machines, and machine-tool feed drives
• Pump drives where a fixed-speed reducer is needed between motor and pump
• Door operators, gate actuators, and barrier systems
• OEM machinery where a compact, sealed gear reducer is integrated into the design
• Material handling equipment in lumber mills, recycling plants, and grain processing

Competitor Cross-References

The Vortex X-Series interchanges with most major worm gear reducer brands at matching center distances. Use this table to find a Vortex replacement for an existing competitive unit. Always verify motor frame, output shaft size, ratio, and hand of rotation against your existing nameplate before ordering.

"N/A" indicates the manufacturer does not offer a unit at that size class. Cross-reference is mechanical based on center distance and mounting interface. Confirm output shaft, ratio, and hand match before substituting.

Selection Guide

To select a Vortex X-Series reducer for your application, work through four questions in order:

1. What output speed do you need? Output RPM = motor RPM ÷ ratio. A 1750 RPM motor with a 10:1 reducer gives 175 RPM at the output (less actual ratio variance; exact ratios are listed on each product page).
2. What torque does the driven load require? Compare the required output torque to the reducer's mechanical torque rating at your ratio and input speed. Build in a service factor (typically 1.0 for steady, 1.4 for shock, 2.0 for severe).
3. What motor frame are you driving with? Confirm the X-Series size you're considering supports your motor frame (X133 to X206 are 56C only; X237 to X262 add 140TC; X300 to X325 add 180TC).
4. What's the overhung load at the output? If you're driving a sprocket, sheave, or pinion at the output shaft, the radial load from belt/chain tension or gear separation force has to stay within the OHL rating for that size.

If you'd rather have us size the reducer for you, call (888) 203-2358 or open a quote and tell us your application: driven equipment, motor HP, required output speed, and operating cycle. We'll spec the right Vortex unit and confirm stock from our Houston warehouse.

Frequently Asked Questions

What is the Vortex X-Series worm gear reducer used for?

The Vortex X-Series is a single-reduction worm gear speed reducer with a solid output shaft and a NEMA C-face input flange. It is used wherever a motor needs to drive a shaft at lower speed and higher torque than the motor produces directly: conveyors, mixers, indexing tables, pumps, lifts, and packaging machinery being the most common installations. The C-face flange lets you bolt a standard NEMA motor directly to the input, eliminating the coupling and alignment work required by an inline reducer.

What does the part number X133-10-56C-L mean?

X is the series identifier (X-Series, solid output shaft). 133 is the unit size, equal to the center distance in thousandths of an inch, so X133 has a 1.333-inch center distance. 10 is the nominal gear ratio (10:1, with an exact ratio of 10.3:1). 56C is the NEMA C-face motor frame the input flange accepts. L indicates a left-hand output shaft. The same family includes R (right-hand) and LR (double-ended) output configurations.

Which Vortex X-Series size replaces a Dodge Tigear Q133 or a Hub City 134?

Both the Dodge Tigear Q133 and the Hub City 134 are 1.333-inch center distance worm gear reducers, so they both cross-reference to the Vortex X133. Match the ratio, motor frame, and output shaft direction from the original nameplate. The Vortex X-Series also cross-references to Baldor F913, Boston Gear F713, Falk Omnibox 1133WBM, Grove Gear BMQ213, Morse Raider 133Q, and Winsmith 913MDN at that same 1.333" center distance.

What's the difference between the Vortex X-Series, XS-Series, and XH-Series?

All three share the same housing, gearing, and ratio set. The only differences are the input and output shaft configurations. The X-Series has a NEMA C-face input flange and a solid output shaft. The XS-Series has solid input and output shafts but no motor flange, so it is driven by belt or chain rather than a coupled motor. The XH-Series has a NEMA C-face input flange but a hollow output bore that slides directly over a driven shaft and locks with a key, used on conveyor head shafts and mixer drives where you want the reducer to mount on the driven shaft instead of being coupled.

What ratios and motor frames are available?

Every X-Series size is available in eight nominal ratios: 5:1, 10:1, 15:1, 20:1, 30:1, 40:1, 50:1, and 60:1. The smaller sizes (X133, X154, X175, X206) accept only the NEMA 56C motor frame. X237 and X262 add NEMA 140TC. X300 and X325 add NEMA 180TC. Confirm the frame on your motor's nameplate before ordering. The frame number is the dimensional standard the C-face flange is machined to.

Can the Vortex X-Series be run backward (output driving input)?

Vortex X-Series reducers at ratios of 30:1 and higher are self-locking, meaning the output cannot back-drive the input under load. This is useful for hoists, jacks, and any application where you want the reducer to hold position when power is removed. At lower ratios (5:1, 10:1, 15:1, 20:1) back-driving is possible under load, so an external brake or a backstop accessory should be specified if the application requires holding torque. Specific back-drive behavior depends on the load and is not a substitute for a properly engineered brake.

Does the X-Series ship from Houston, and how fast?

All Vortex X-Series reducers in our active inventory ship from Texas Belting & Supply's Houston, TX warehouse the same business day for orders received before 3 PM Central time. Standard sizes and ratios (X133 through X325 in the 5:1 to 60:1 range) are generally in stock. For non-stocked configurations, lead time is typically one to three business days from receipt of order. Call (888) 203-2358 to confirm stock and request a quote.