Crown Gear Right Angle Gearbox

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Processing equipment, manufacturing equipment, and machine drive systems require reliable, high-power performance. Providing this level of performance in a right-angle transmission gearbox requires high precision gears as well as quality materials and construction.  These high-performance gears are mounted to input and output shafts positioned at 90-degree angles, allowing the gearbox to intersect with a plane or cross on two parallel planes.

High-Quality Right Angle Transmission Gearboxes

Crown Gear is a brand of right-angle gear drive boxes manufactured by Zero-Max designed for dependable, economical transfer of speed or power. Our premium 90° gear reducers are compact and feature efficient, quiet operating spiral bevel gears.
Spiral bevel gears have curved teeth to improve contact and reduce the amount of vibration and noise generated when the gear moves at high speeds. The flexibility and enhanced traction of this design also makes spiral bevel gearboxes an excellent option for high-volume applications and those involving steep or varying planes.
Zero-Max’s Crown Gear right angle transmission gearboxes are available in two versions;

  • Standard, black anodized aluminum housing, stainless steel shafts
  • IP65-Rated, nickel-plated aluminum housing, stainless steel shafts, shaft seals, food-grade grease

Both series are available in 1:1 and 2:1 speed ratio with two-way (one output shaft) or three-way (two output shafts) versions. All units come pre-lubricated and are maintenance-free with a long operating life. A wide range of miter gearbox shaft styles are also available, as well as specially designed units to handle most applications.

Premium Spiral Bevel Gearboxes

Crown Gear sets the standard for 1:1 and 2:1 spiral bevel gear drives. Every component is precision machined, inspected and then carefully assembled. These right angle gear driveboxes are quiet in operation due to the special care taken in manufacturing and assembly. Our 90° miter gearboxes are compact and reliable spiral bevel gear drives precisely designed for a dependable, economical transfer of speed or power.

Advanced Quality Construction

Crown Gear’s two-way and three-way 90-degree bevel gearboxes transmit power with quiet, dependable spiral bevel gears. These premium miter speed reducers feature hardened spiral bevel gears and non-magnetic stainless-steel shafts. Another beneficial quality of our 90-degree gearmotors is that they are compact and feature multiple mounting options. The fully enclosed design provides maintenance-free operation while ensuring that internal gears can’t get out of alignment, jam up or become contaminated by debris.

The IP65-Rated Crown Right-Angle Geardrives feature shaft seals for Ingress Protection from dust and water as well as a Nickel-Plated housing for corrosion resistance. These units have been certified with the IP65 rating from an independent laboratory and are ideal for applications in the food industry or those requiring frequent washdowns. All IP65-Rated Crown drives utilize a premium H1 rated food-grade grease, standard.

All crown units feature a cast aluminum housing designed for maximum strength and heat dissipation. Drives are available with shafts of 3/8, 1/2, 5/8 and 3/4 inch diameter in two-way and three-way units with both 1:1 and 2:1 ratio. Three-way units in 1:1 and 2:1 ratio are available with 1-inch shafts. Three-way units with counter-rotating output shafts are also available.  Additionally, we can quote several unique types of shafts, including:


  • Squared
  • Splined
  • Extended
  • Shortened
  • Stepped

Right Angle Gearbox Selection Process

There is a standard process that should be considered before selecting the 90-degree spiral bevel gearbox that is correct for your specific application.

  1. Determine Your Preferred Input/Output Ratio. Standard ratios are 1:1 and 2:1. It is also possible to use a step up ratio of 1:2 by using shaft #2 as the input shaft on 2:1 units.

  2. Designate Which Shafts Are To Be Input And Output Shafts. This step is especially important to determine that no shaft will turn faster than 2000 RPM. If shaft #2 in the 2:1 ratio models is selected as the input shaft, it can turn at a maximum of 1000 RPM. In the 1:1 ratio models it makes no difference. However, the choice in either case will affect your mounting.

  3. Choose Drive Type. Use either 2-way or 3-way configuration.

  4. Choose Style. Determine if a Standard Model or IP65 Ingress Protection / Nickel-Plated Model is desired.

  5. Select The Correct Model Number. Select the correct model number; note that units with 3/8 inch shafts have flats and units with 1/2, 5/8, 3/4 and 1 inch shafts have standard keyways. Also note that 1 inch shaft models are available in 3-way type only.

  6. Be Certain That The Designated Output Shaft Has A Torque Capacity Greater Than Your Applications Load. Be sure to apply the appropriate service factor.

  7. If modifications of shafts and/or housings are required for your application, send a drawing and a description of the application to the factory.

Right Angle Gearbox Options

We carry two styles each with three unique varieties of 90° reducers to service all types of applications. Our miter gearbox options include the following:

Standard Right Angle Crown Gear Drives that feature black anodized cast aluminum housings, stainless steel shafts, and specially designed hardened spiral bevel gears. All models are permanently lubricated with a premium grade grease and are maintenance free. 1:1 and 2:1 Ratios in three different styles:

Two-Way Right Angle Gearbox

Three-Way Right Angle Gearbox

Counter-Rotating Gearbox

 IP65-Rated Right Angle Crown Gear Drives that feature nickel-plated cast aluminum housings, stainless steel shafts, shaft seals and specially designed hardened spiral bevel gears. All models are permanently lubricated with a premium H1 rated food-grade grease and are maintenance free. 1:1 and 2:1 Ratios in three different styles:

IP-65 Rated Two-Way Gearbox

IP-65 Rated Three-Way Gearbox 

IP-65 Rated Counter Rotating Gearbox


Right Angle Gearbox Features & Benefits

Zero-Max’s Crown Gear 90° gear drives provide numerous features and benefits, some of which include:

  • Standard-duty and IP65-Rated options for washdown applications
  • Double sealed bearings that hold lubrication in and keep dirt out.
  • Precision hardened and ground ball bearings for smooth, quiet, long operating life.
  • Non-magnetic stainless steel shafts that are corrosion resistant and require minimal maintenance.
  • Lightweight aluminum alloy housing for maximum strength and heat dissipation. Nickel-Plated housing for corrosion resistance standard in IP65-Rated models.  
  • Pre-lubricated and maintenance-free operation.  Food-Grade grease standard in IP65-Rated models
  • Get the exact model that fits your application needs with an option of several standard types and sizes, plus special shafts options.
  • Multiple mounting positions, which simplifies design considerations.
  • Over 60 years of proven design performance in thousands of applications.

Right Angle Gearbox Applications

Use right angle transmission gearboxes for any application that demands reliable transfer of speed or power. Crown Gear 90-degree gearmotors are used throughout dozens of industries and in thousands of applications, including:

  • Food Processing Equipment
  • Blowers & Fans
  • Unloaders & Unscramblers
  • Bottle Capping
  • Electroplating Machinery
  • Folding Machines
  • Conveying and Transfer Machines
  • Chemical Mixers
  • Power Transmission Equipment
  • And Many More…

Contact Zero-Max for Crown Gear Right Angle Drives

Crown Gear is a brand of Zero-Max, Inc, offering the most dependable and reliable transfer of power on the market. For more information on Crown Gear right angle gearboxes, contact us today or find your local sales representative.

Select an industry or application below to explore the benefits of using Zero-Max Right Angle Gearboxes in your machine design.