Type HM - Ram®Vertical Axis Helical Mixer Drive

Type MD - Ram® Vertical Axis Right Angle Mixer Drive

Type LB, LH - Ram® Vertical Axis Parallel Shaft Mixer Drive

RAM Mixer Drives can handle the tough mixing requirements in industries like food processing, waste and water treatment, chemical processing, pulp and paper, pharmaceutical, power generation, and mining.

With a wide range of sizes available, there's a RAM Mixer Drive for virtually any mixing application. Best of all, every RAM is fully backed by Rexnord - one of the most trusted names in industry for more than 100 years.

RAM is no ordinary drive. It's designed specifically for the rigorous requirements of mixing service by Rexnord, a company that's been supplying mixer drives for over 40 years.

The unique RAM features that make a difference include:
     • Large-diameter, high-capacity output shafts
       to accommodate the high-bending moment
       loads common in mixing applications
     • Extended bearing life -minimum 30,000 hours
       L-10 at 1.25 service factor even at high thrust
       and moment loads
     • No-leak drywell design physically separates 
       the oil sump from the output shaft to eliminate
       gear oil contamination of your product
     • Rugged cast or fabricated housings designed
       to withstand the stresses of mixing while
       maintaining accurate gear alignment
     • Helical and spiral-bevel gearing for quiet operation and high drive efficiency
     • Product flexibility for handling almost any type of installation. RAM Mixer Drives are available 
       with solid or hollow output shafts, and can be adapted to top, bottom, or side entry mixing
     • Ratings equal to or higher than original equipment drives allow you to easily enhance system
       performance when replacing your existing drive
     • Excellent availability lets Rexnord ship an HMX or MDX replacement unit in just 72 hours
       24 hours on an emergency breakdown basis
     • Quick, direct, drop-in replacement.

RAM MDX Series Mixer Drives are designed for fast, easy, drop-in interchangeability with many popular Lightning®, Chemineer® and Philadelphia® units. Now you can easily upgrade your existing Lightning, Chemineer or Philadelphia drive with a quick, bolt-in RAM replacement. Standard interchange adapters provide the connection.

Custom-engineered adapters are also available to enable you to easily replace other types and makes of mixer drives.

AirMax® Breather
Unique Moisture & Particulate Protection for Enclosed Gear Drives (Optional Accessory)
Reduce premature gear drive failure. During the "inhalation" cycle the AirMax media blocks moisture from entering. During the "exhalation" cycle the media allows moisture to exit.

GMAX 6000™
Horsepower, Heat, Moisture, and abrasive contamination are constantly working to break down your gear drive lubricant. GMax 6000 is designed to provide superior wear protection in the most demanding gear drive applications. GMax 6000 is a Polyalkylene Glycol based lubricant or PAG. PAG synthetics have exemplary lubricating properties over traditional Polyalphaolefin or PAO Synthetics and mineral oils. The viscosity index of PAG lubricants is double that of PAO lubricants. This means that a PAG will perform much better over the range of operating temperatures experienced by an industrial gear drive.

A Reliable RAM for Every Mixing Need
RAM Mixer Drives are available in three basic size ranges, each with flexible accessories to fit virtually any requirement.

RAM HMX Mixer Drive & Accessories For Small-Capacity Mixing
     • Hollow Shaft
     • Top or Side Entry
     • Up to 30 Hp
     • Up to 22,000 lb-in Output Torque
     • 5.06:1 to 31.30:1 Ratios
     • Up to 350 Output Rpm

RAM MDX Mixer Drive & Accessories For Medium-Capacity Mixing
     • Solid/Hollow Shaft
     • Top, Bottom or Side Entry
     • Up to 514 Hp
     • Up to 166,000 lb-in Output Torque
     • 5.06:1 to 1207:1 Ratio
     • Up to 350 Output rpm

RAM LHXV Mixer Drive & Accessories Parallel-Shaft Drive For Large-Capacity Mixing 
     • Solid/Hollow Shaft
     • Top, Bottom or Side Entry
     • Up to 2349 Hp
     • Up to 1,060,000 lb-in Output Torque
     • 5.60:1 to 437.9:1 Ratios
     • Up to 310 Output Rpm

RAM LBX Drive & Accessories Right-Angle Shaft Drive For Large-Capacity Mixing 
     • Solid/Hollow Shaft
     • Top, Bottom, or Side Entry
     • Up to 1083 Hp
     • Up to 1,060,000 lb-in Output Torque
     • 13.95:1 to 357.5:1 Ratio
     • Up to 125 Output Rpm

RAM HMX Mixer Drives sizes 20-22
Designed for small-capacity, tough-duty mixing applications, the RAM HMX is a hollow shaft unit for top or side entry applications. It incorporates many of the same construction and performance features found on our medium-and large-capacity mixer drives.

Rugged Cast-Iron Housing
Accepts mixing stresses while maintaining accurate gear alignment and resisting corrosion.

Convenient C-Face Motor Adapter
This fully registered adapter ensures fast, positive motor alignment, eliminates hassles with V-belts, sheaves and guards, and simplifies installation with a flexible coupling.

Mounting Flexibility
Various mounting configurations, including vertical and horizontal shaft with ASA flange and solid drive shaft options, accommodate a wide range of applications. All configurations feature a male register for accurate alignment.

High-Strength Helical Gearing
All-helical gearing is designed for high efficiency and maximum load-carrying capacity with reserve strength rating.

No-Leak Drywell Construction
Oil sump is isolated from output shaft to prevent gear lubricants from leaking and contaminating the product being mixed.

Optional Stub Shaft
Available with high-strength, alloy-steel stub shah and coupling hub to easy connect/ disconnect to mixer shaft.

Severe-Duty Seals
Shielded, grease-purgeable upper seals provide a grease barrier that traps water, dirt and abrasive contaminants before they can enter the unit and cause damage.

Low-Speed Tapered Bushing/Adapter
Ensures a solid connection with the mixer shah and allows for easy installation and positive removal of shafts for various diameters.

Unique Low Speed Bearing Arrangement
High-capacity, spherical-roller, mixer shaft bearing isolates impeller loads from gearing and provides a high moment capacity. Tapered roller bearings accept high thrust loads in either direction.

Re-Greasable Low Speed Bearings
Upper tapered roller bearing and bottom spherical roller bearing are grease lubricated and field re-greasable for easy maintenance. Lower tapered roller bearing is flood oil-lubricated.

Readily Available Replacement Components
Seals, bearings, and high speed couplings are readily available from your local distributor. Manufacturers part numbers for these items are published in the HMX Service Manual.

Simple, Positive Lubrication
Sealed, grease-lubricated upper high-speed and intermediate bearings and flood oil-lubricated lower bearings reduce oil levels, churning and foaming for cooler operation. Large oil capacity also helps keep the unit cooler for maximum life. A magnetic oil drain plug is provided.

Easy Maintenance
Easily accessible oil fill opening and oil drain plugs let you perform required maintenance without removing any covers or guards. Standard, automotive-type, quick-check dipstick allows fast, easy oil checks. 

RAM MDX Mixer Drives sizes 300-900
Ideal for medium-capacity mixing needs, the rugged RAM MDX has been performance-proven through years of operation in a diverse range of demanding installations.

Rugged Steel Housing
Fabricated steel housing effectively resists shock loads and stresses associated with mixing applications and maintains accurate gear alignment.

Large Oil Capacity
Lowers operating temperatures to help oil retain higher viscosity, extending gear, bearing and seal life. Auxiliary cooling systems are also available.

Larger, Long-Life, Grease-Lubricated Bearings
With a minimum L-10 life three times that of standard commercial drives -and in excess of industry standards for most applications - the upper and lower output shaft tapered roller bearings withstand high impeller loads and insure maximum life. A grease baffle on the upper bearing retains grease and prevents it from entering the unit.

Proven High-Hardness Helical Gearing
Engineered to exceed AGMA standards with a reserve strength rating, the surface-hardened, precision-ground, long-life helical gears deliver a smooth, strong, efficient power flow. Large tooth profile provides extra strength to handle high-shock loads.

Precision Spiral Bevel Gearing
Surface hardening and finish lapping ensure smooth, quiet operation and greater gear efficiency.

Oversized Alloy Steel Alloy
Considerably larger in diameter than standard drive output shafts, the solid alloy steel shaft has adequate stiffness to withstand high mixer shaft loads.

Comprehensive Leak Protection
Covers, shims, gaskets and blind-tapped end cover holes help retain lubricant, eliminate oil leakage and keep contaminants out to reduce maintenance and downtime.

No-Leak Dry well Low-Speed Construction
A drywall isolates the low-speed output shaft from the oil sump to prevent lubricants from leaking and contaminating your product.

Fast, Easy Ratio Changes
With helical gearing contained in the high-speed head, the RAM MDX gives you maximum ratio flexibility. To change ratios, simply replace the pinion and gear. For a reduction change, just replace the high-speed head with optional helical gears readily available from stock.

RAM LHXV & LBX Mixer Drives sizes 1100-1500

Large Oil Capacity
Lowers operating temperatures to help oil retain higher viscosity, extending gear, bearing and seal life. Auxiliary cooling systems are also available.

External Forced-Lubrication System
An externally-mounted, electric-motor-driven oil pump with a filter delivers generous, positive lubrication to all gearing and bearing elements to maximize drive life.

Larger, Long-Life Bearings
With a minimum L-10 life three times that of commercial drives*and in excess of industry standards for most applications*the output shaft bearings withstand high mixer propeller loads and insure maximum life in continuous mixing applications.

Quick Oil Checks
Standard, automotive-type dipstick allows fast, easy checks of oil level.

Proven Surface-Hardened Helical Gearing
Engineered to exceed AGMA standards with a reserve strength rating, the surface-hardened, precision-ground, long-life helical gears deliver a smooth, strong, power flow. Large tooth profile provides extra strength to handle high shock loads. Efficiency is 98 ½% per mesh.

Precision Spiral Bevel Gearing
Surface hardening with shot peening in the root area and finish lapping ensure smooth, quiet operation and greater gear efficiency.

Oversized Alloy Steel Shaft
Considerably larger in diameter than standard drive output shafts, the solid alloy steel shaft has adequate stiffness to withstand high mixer shaft loads.

Comprehensive Leak Protection
Covers, shims, gaskets and blind-tapped end cover holes help retain lubricant, eliminate oil leakage and keep contaminants out to reduce maintenance and downtime. A standard magnetic oil drain plug is standard.

No-Leak Drywell Low-Speed Construction
A drywell isolates the low-speed output shaft(on models with the shaft extension down or with a hollow shaft) from the oil sump to prevent lubricants from leaking and contaminating your product. All other shaft extensions feature a twin severe-duty sealing system.

Optional Hollow Output Shaft
The RAM LHXV and LBX are also available with a hollow shaft output connection for mixer shaft insertion.