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Model Selection & Configuration
Branham’s MICROGEAR® is a right-angle, hollow core, helical gearbox. It is designed to offer the versatile power transfer capabilities of larger gearboxes in an ultra-compact size (less than 4 cubic inches) that meets today’s increasing need for smaller-scale industrial and end-product applications.
Learn about right-angle gearboxes
What models are available?
There are two MICROGEAR® models:
MG5
- ½-inch (12.7mm) bore/shaft centerline dimensions
- 1.436 in. x 1.436. in. profile
- Four R4A sealed bearings
MG7
- ¾-inch (19.05mm) bore/shaft centerline dimensions
- 1.826 in. x 1.448 in. profile
- Four R6 sealed bearings
Discover the advantages of ultra-compact gearboxes
What gear ratios are available?
All MICROGEAR® gearboxes have a 1:1 gear ratio. They can operate with power capacity of 1/6 HP and speeds up to 1800 RPM.
Are MICROGEAR® gearboxes available in both hollow bore and shaft options?
Yes. Hollow bore models can accept keyed shafting through the gearbox.
The MICROGEAR® MG5 has a ¼-in. bore and a ½-in. center distance between the bores. The MG7 has a 3/8-in/ bore with 3/4"-in. center distance between the bores.
Shafted models in both sizes can include solid input/output shafts configured in full-through or 2, 3, or 4-way design.
Download the MICROGEAR® product guide
Are MICROGEAR® gearboxes bidirectional?
Yes. They can rotate clockwise, counter-clockwise, or in both directions. With right-hand direction, the A bore and B bore both rotate clockwise. With left-hand direction, the A bore rotates clockwise but the B bore rotates counter-clockwise. Which type of rotation you need depends on the output rotation required.
Are MICROGEAR® gearboxes available in stainless steel?
Yes, stainless steel is available upon request, making MICROGEAR® an ideal gearbox for sanitary applications and harsh working environments.
Consult a Branham engineer about your requirements
What lubrication options are available?
MICROGEAR® gearboxes can be ordered with standard or food grade grease. The standard lubrication is Magnalube-G Grade 2 grease. Each gearbox comes pre-lubricated and sealed within a leak-proof gearcase, so they are essentially lubricated for life.
Read how to select a right-angle gearbox
Can MICROGEAR® gearboxes be customized?
Small customizations may be possible, depending on need.
Contact us to see if we can make the changes you need
How much lead time is required?
Standard lead time for in-stock components is 1 week to ship.
Performance & Operating Conditions
What are the MICROGEAR® key attributes?
Both the MICROGEAR® MG5 and MG7 models feature:
- 4140 hardened gears
- Anodized aluminum housing
- Stainless steel shafts
- Pre-lubrication with Magnalube-G Grade 2 grease
Get the full details about MICROGEAR® gearboxes
MICROGEAR® gearboxes may be less than half the size of other Branham right-angle gearboxes, but they deliver the advantages for which all our gearboxes are known:
- Reliability
- Performance
- Precision
- Speed
- Torque control
- Cost-efficiency
- Long life
What operating conditions do MICROGEAR® gearboxes support?
MICROGEAR® gearboxes are designed to operate within a range of -20o to 220o F.
Any gearbox may overheat if operating outside of rated torque and RPM ranges. In addition to speed of rotation and the amount of torque in the application, any axial or moment load on the shaft will increase stress and, therefore, operating temperature. External bearing may be necessary as well as following proper RPM and torque guidelines.
See full technical specifications
Which MICROGEAR® gearbox is best for my application?
Key considerations for right-angle gearboxes include:
- Performance capability required
- Mounting requirements
- Environmental operating conditions
- Space available
Application Suitability
What applications are best suited for MICROGEAR® gearboxes?
- Automated vending
- Bottling and capping
- Conveyors
- Electronics
- Food processing
- Labeling and printing
- Material handling
- Medical equipment
- Packaging
- Robotics
Learn how downsized gearboxes support space-saving design
Maintenance & Serviceability
Are MICROGEAR® gearboxes refurbishable on-site?
Yes. Field kits that match MICROGEAR® models are available for on-site replacement of gears and seals.
Maintenance technicians familiar with gearbox components can efficiently disassemble the gearbox, replace parts as needed, and reassemble the gearbox for continued service. This saves time and keeps production lines moving. It also enables preventive maintenance to be performed during scheduled downtime, preventing the need for emergency repairs.
How do I know when MICROGEAR® gearboxes need to be maintained?
Replacing gears and or seals, or the entire gearbox if needed, before they fail completely prevents costly downtime and potential damage to other system components. Look for:
- Noises the gearbox is beginning to make
- Underperformance
- Lubrication leaks
Learn how to prolong gearbox life
Why should I choose MICROGEAR® over other gearboxes?
- Compact size: MICROGEAR® gearboxes are designed to save space for applications where low torque is needed.
- Manufacturing quality: MICROGEAR® gearboxes are manufactured in Wisconsin by W.C. Branham using the highest quality materials and workmanship.
- Short lead time: Standard lead time of one week to ship for components in stock.
- Responsive technical support: Application assistance and troubleshooting from Branham engineers familiar with North American industrial applications, without extensive time-zone delays.
- North American distribution: Responsive delivery from Branham’s central-USA location minimizes time from order to receipt.
Ordering & Support
How do I order an MICROGEAR® product or get support?
Contact W.C. Branham to discuss your application requirements:
- Phone: 1-800-428-1974 (U.S./Canada) or 715-426-2000 (Local)
- Email: AskWCB@wcbranham.com
