The Model MR-75 

The best Just Keeps Getting Better

The Robolube Hyrail Track Lubricator revolutionized hyrail lubrication of rail.  Since 1990, Robolube Lubricators have been operating consistently in day-to-day operations in the rugged environment of the railroad industry. Many Robolube units are already at work in their second and third vehicles!

The Model MR-75 mounts easily in the back of almost any style hyrail truck with room to spare. This new innovative design allows for a lubricator to be installed on what was previously considered too light a hyrail truck to be used in a lubricating program.

Robolube’s innovative design utilizes the vehicle’s existing electrical system without the modifications that other systems require such as underhood power sources and/or additional electrical components. The Robolube design features an electric over hydraulic power source that has been field proven in day to day operations since 1990.

Since the introduction of the Robolube Hyrail Lubricator, track lubrication has evolved into an exacting process. Within this process, the amount of lubrication and its location are critical. The Robolube System utilizes small orifice sizes to reduce unnecessary grease usage and insures that only the right amount of lubricant is dispensed to the rail. With Robolube’s standard nozzle arrangement, accuracy of lubricant placement on gage face has been greatly improved. Now with the introduction of the new “Rollerlube” nozzle design acuuracy to gage face is not compormised by variables such as high elevation curves, high degree curves, weights and railgear/vehicle suspensions. Robolube introduced the first “Top of Rail” nozzle design in 1995 in response to the rail industry’s demands and Robolube continues to innovate to meet the ever changing rail lubrication environment.

The Model MR-75 was created to address one of the New Industry requirements just mentioned.  The MR-75 was designed to address the continuing problem with overwweight hyrail vehicles.  The MR-75 still utilizes the “Field-Proven” Robolube componenents, for a long lasting investment, only is a smaller, lighter, more econimical configuration.  The reponse to this new design has been impressive.The Model MR-75 mounts easily in the back of almost any hyrail truck configuration and has the capacity to carry 75 to 125 lbs. of lubricant. Robolube’s innovative design utilizes the vehicle’s existing electrical system without the modifications that other systems require, such as underhood power sources and/or additional electrical components. The Robolube design features an electric over hydraulic power source that has been “Field Proven” in day-to-day operations since 1990.

New Model MR-75 Track Lubricator Includes:


  • 14 Gauge enclosure for bulk tank and all grease components, approximately 22″ D x 33″ H  x 47″ W
  • ½” Kraft back insulation on top and all sides
  • Prime painted inside and out
  • Finish paint, baked enamel, white color


  • 12 Volt Permanent magnet motor
  • 12 Volt power supplied from vehicle’s electrical system
  • Gear type hydrolic pump submerged in hydraulic reservoir
  • 1.5 Gallon integral hydraulic reservoir
  • Continuous adn heavy duty solenoid to activate motor
  • Integral relief valve, set at 700 PSI at 3 GPM
  • Entire power unit mounted behind chassis skirting


  • 3″ high x 6″ wide x 5″ long molded plastic control box mounted in cab
  • Four (4) lighted rocker switches controlling: Master switch for powering entire system, heater switch for hot water heater fan control, left rail lubrication, right rail lubrication
  • Activation of left adn right rail lubrication switched allows unit to lubricate both rails simultaneously
  • Indicator light to notify operator of system obstruction
  • Wiring in rubber coated Multi-Conductor cable


  • Graco Dyna-Star 5:1 ratio hydraulic driven grease pump
  • 3500 PSI output at 700 PSI input pressure
  • Custom length displacement pump
  • On-Demand operation
  • Adjustable hydraulic flow control valve on pump head
  • In-line flow control valve


  • 3/8″ 1-Wire steel braided high pressure hoses
  • High pressure hydraulic fittings
  • In-line Graco Model 218-029 Series A high pressure fluid outlet filter with steel bowl and support
  • 3/8″ 2-Wire steel braided high pressure hoses for pressure and return lines
  • Electric, Rotary Selector Valves for left rail lubrication, right rail lubrication, or simultaneous lubrication of both rails
  • Application nozzle assemblies with .035 orifices and “swivel style” pin arrangement
  • “Sure Stop” valve on nozzle assemblies to stop inadvertent grease flow after power is switched off
  • Hydraulic pressure sensor with indicator light on control module to indicate system obstruction


  • Integral grease storage tank: 125 lb. gallon capacity
  • One (1) 5,000 BTU hot water heater with 12 volt fan
  • One (1) 120 volt convection type heater with plug in
  • Hydraulic oil and lube
  • Spare set of 30 mesh strainers for in-line filter system
  • Spare set of application nozzles
  • One (1) auxiliary 12 volt battery mounted inside enclosure and installed
  • Unit weight: 325 lbs. dry, 450 lbs. loaded
  • Operator’s manual


  • “Top-of-Rail” Nozzles
  • “RollerLube” Nozzles
  • Electric Grease Transfer Pump
  • False Floor for track tool storage
  • Field installation
  • Complete Railgear installation

Justin Hamann started his 7th year here, back in Jan. (1st four years in the shop and since becoming the parts manager. He was born in a Minneapolis hospital but lived in the south metro most of my life.  He started working at his Uncle’s beef/hog farm in Southern IA during his summer breaks, while in school.  Justin has an 8-year-old son named Levi.  His passions include Hunting, fishing, camping and hiking- both in Northern MN and especially Northern WI (his favorite place in the world)!  Justin is a member of a local sportsman’s club, in the south metro and he loves firearms.  Justin collects antique ammo cartons, antique hunting and camping gear.  Justin like to read a lot, mostly Louis L’Amour western fiction and collect hunting books and magazines from the 1930’s through the 1970’s.

Christian is a native of Excelsior Minnesota.  He is an avid hunter, fisherman and all around outdoorsman.  Christian has a passion for cooking and the railroad business.  Christian likes to spend his time up north and at his historical house in Shakopee with his wife Lily.

Bob has been in the Railroad Industry since 1984 where he helped start the Railroad Division for Road Machinery & Supplies in Bloomington, MN. Then in 1990, he and his good friend and business partner Roy Nelson, invented a Truck Mounted, Hyrail Track Lubricator for the railroads. The Burlington Northern purchased the first Robolube Track Lubricator that was assembled in Roy Nelson’s garage in Lakeville, MN. Since then, Robolube has grown to become the Hyrail Lubricator of choice and Robolube was relocated to their present location in 1993 after Roy’s garage became too small for operations.

Bob and Roy were always striving to improve and add to their product line while enjoying their close friendship. With Roy’s unexpected passing in 2015, Bob had to continue RBL, Inc. without his comrade Roy Nelson. RBL is here today because Bob and Roy’s Dream can never fade.

Robbie Pieper is a native of Minnetonka Minnesota.

This Company and all of us at RBL are dedicated to remembering two individuals that made our company and its successes possible.  Roy Nelson and Ryan Pieper were an integral part of RBL and their laughter, personal qualities and commitment to our success are greatly missed.   To have lost them both so unexpectedly and suddenly has left a void in RBL that can never be filled.  Their presence was an irreplaceable asset to our company and made us who we were then and who we still are today.

Roy Nelson was my dear personal friend and business partner for over 30 years, and I could not have had a better friend and partner in creating RBL, Inc.  Roy was an avid golfer, inventor and creative man.  He was such an inspiration to many, and I cannot recall anyone not enjoying the time they spent with Roy.

Ryan Pieper was my son.  Ryan loved the Railroad Industry and the people that he worked with and was so excited to be part of this great industry.  Ryan was also an avid outdoorsman and was a true sportsman and conservationist.

I was blessed to have been allowed the pleasure of working alongside my son on a day-to-day basis and I am heartbroken for the loss of such a unique and wonderful privilege.  I am proud to call Ryan my son and I will forever miss his inspiration, personality, enthusiasm and dedication to our efforts.

RBL, Inc./Robolube will never be the same without Roy and Ryan, but we promise to always dedicate our efforts and future successes to their memory and the inspiration that they gave to us.

~ Robert Pieper, President

Michelle Grosinger, has been with RBL, Inc for 23 years. She is a classically trained chef from Le Cordon Bleu.  Michelle and her husband own a Midwest Modified Dirt Car, which he races just about every weekend in the spring, summer, and fall.  No children but they have a dog named Bentley.

Jeff Simon started at RBL, INC. In 1999. Jeff has been been selling maintainer  products for almost 24 years. Jeff grew up in northern mn. He loves the lakes, fishing and pheasant hunting. Now he resides in Wisconsin since 2002.

Ever since I can remember, I’ve tinkered with everything I could get my hands on trying to improve one aspect or another. This passion to learn & make things better is what drives me develop the best products possible.

The variety of my background gives me an unique perspective on projects. I have 10+ years of automotive experience which has given me a very good understanding of how many types of systems work both in principal and real world applications. Being a past & current small business owner, I have a strong work ethic & ability to problem solve.

I’ve worked with companies as large as Bayer AG to small start-ups to accomplish tasks ranging from process improvement, marketing strategy & content, cost reduction, & large scale product development/R&D.