The ALMCO RTW-20E is a compact top-loading rotary cabinet washer designed for manufacturers requiring reliable cleaning performance in a space-efficient package. Featuring a 20-inch rotating turntable and 100-pound load capacity, the RTW-20E effectively removes oils, coolants, chips, and manufacturing contaminants from a wide variety of machined and fabricated components. Its compact footprint makes it ideal for cell manufacturing, maintenance areas, and production operations where floor space is limited.
Part Washing Equipment
RTW-20E Compact Rotary Parts Washer
OVERVIEW
RTW-20E System Overview
The RCW-24E combines the durability, flexibility, and cleaning performance of ALMCO’s RCW Series into a compact cabinet washer ideal for small to medium-sized components. Built entirely from stainless steel, the machine is designed for demanding industrial environments where consistent cleaning results and long service life are critical.
A front swing door opens a full 180 degrees, providing unobstructed access to the rotating turntable for efficient loading and unloading. Parts can be
The RTW-20E delivers the benefits of a rotary cabinet washing system in a compact, easy-to-install package. Designed for smaller components and light-to-medium production requirements, the machine combines a rotating turntable with high-pressure spray cleaning to provide thorough and repeatable cleaning of manufactured parts.
Parts are loaded through the top access opening onto a 20-inch diameter turntable capable of supporting up to 100 pounds. During operation, the turntable rotates at 6 RPM while strategically positioned spray nozzles apply cleaning solution to all exposed surfaces. The rotating action helps ensure complete cleaning coverage while minimizing operator involvement.
Constructed from durable 304 stainless steel and powered by a 2 HP wash pump delivering 40 GPM at 35 PSI, the RTW-20E provides reliable performance for a variety of industrial cleaning applications. Its compact dimensions allow it to fit easily into manufacturing cells, maintenance departments, and production environments where larger cabinet washers may not be practical.
For manufacturers seeking an economical and space-efficient cleaning solution, the RTW-20E offers dependable performance in a compact footprint.
KEY ADVANTAGES
- Compact top-loading design minimizes floor space requirements
- 20-inch diameter turntable with 100 lb capacity
- Durable 304 stainless steel construction
- Variable frequency drive for reliable operation
- 40 GPM wash flow rate at 35 PSI
- Ideal for cell manufacturing and smaller production environments
- Easy loading and unloading of smaller components
COMMON APPLICATIONS
- CNC machined parts
- Fasteners and fittings
- Repair and maintenance operations
- Medical components
- Small castings and fabricated parts
- General industrial cleaning
TECHNICAL SPECIFICATIONS
| Specification | RTW-20E |
|---|---|
| Loading Type | Top |
| Overall Machine Dimensions (Approximate) | Length 47″ x Width 40″ x Height 57″ |
| Turntable Capacity | 100 lbs. |
| Turntable Diameter (In) | 20 |
| Inside Cabinet Height (In) | 17 |
| Turntable Load Height (In) | 17 |
| Wash Tank Capacity (Gal) | 45 |
| Rinse Tank Capacity (Gal) | N/A |
| Wash Pump | 2 HP, 3450 RPM motor |
| Wash Flow Rate | 40 GPM @ 35 PSI |
| Rinse Pump HP | N/A |
| Rinse Flow Rate | N/A |
| Drain Fitting | 1-1/2″ with shut-off valve |
| Turntable Drive | 1/4 HP 90 Volt DC gearmotor |
| Turntable Speed | 6 RPM |
| Electric Heated Wash/Rinse | 12 kW screw-plug immersion heaters |
| Tank Heating Time | 70 to 140 degrees (F) in 1 hour |
| Tank Insulation | 1″ thick layer of fiberglass |
| Machine Construction | 304 stainless steel |
| Power Requirement | 460v (Others Available) 3 Phase, 60 Cycle |
| Drive Unit | AC Variable Frequency |
| Operator Controls | 110 volts supplied by a transformer within the control box |
| Electrical Controls | Conformance to NEC (NFPA 70) and NFPA 79 electrical standards |
| Electrical Enclosure | NEMA Type 12 panel enclosure mounted on the machine |
| UL® 508A Electrical Panel Certification | Available for additional cost |
| Paint | Two coats of Diamond Vogel brand industrial enamel in Lunar White with Midnight Blue accent |
SYSTEM DETAILS
RTW Cabinet
Wash Cabinet
Basic design of the machine consists of a cabinet that houses the turntable and spray system. The bottom of the cabinet also acts as a tank for holding 45 gallons of cleaning solution.
The cabinet measures approximately 22″ square (inside) and is fabricated from 12-gauge 304 stainless steel using all-welded construction to provide a water-tight, first-rate appearance. The top of the cabinet includes a recessed lip that acts as a seal for the hinged lid, and the interior of the cabinet (beneath the turntable) includes a removable stainless steel chip tray.
The tank at the bottom of the cabinet is fitted with two Indeeco brand 6 kW stainless steel immersion heaters that are operated by a Watlow digital temperature controller on the main electrical enclosure. The tank extends out 14” at the rear of the machine to allow an open area for mounting the vertical wash pump, and the bottom of the tank is sloped to a stainless-steel drain valve for solution change-out. A 12” diameter stainless steel tank clean-out cover is also provided on one cabinet wall for tank access.
RTW Turntable
Turntable
The 20” diameter turntable is fabricated from stainless steel materials and includes a 3” tall perimeter and a 1/2” diameter stainless steel center shaft. The shaft extends downward into a UHMW polyethylene support block, and the top face of the block provides a low friction support surface for the turntable.
The turntable is friction driven by a fractional horsepower AC gearmotor located outside of the cabinet on the back of the machine. A rubber wheel on the gearbox output shaft extends into the cabinet and drives the turntable on its perimeter. During the automatic washing sequence, the turntable rotates at a constant speed of 6 RPM while the machine runs through its timed cleaning cycle.
RTW Sprayer
Wash Pump and Spray System
The wash pump is a Gusher brand vertical, end-suction, centrifugal unit with cast iron housing and impeller, complete with a 2 HP, 3450 RPM motor. The pump is capable of delivering solution to the spray system at a rate of up to 40 GPM @ 35 PSI. A pressure gauge and a stainless-steel ball valve are provided to monitor and control pump output.
The spray system consists of two stainless steel header pipe assemblies that each provide top, side, and bottom spray coverage. The individual header pipes are drilled to accept Spraying Systems brand 1/4″ MPT spray nozzles made of stainless steel. These nozzles develop a flat-V spray pattern to spray solution onto the process parts.
RTW Electrical
Electrical Controls
Electrical controls are housed in a Hoffman (or Saginaw) brand NEMA 12 enclosure mounted on the side of the wash cabinet (as room permits, otherwise enclosure is free standing). Components within the enclosure are finger-safe and are Allen-Bradley brand unless noted otherwise. Components include a main disconnect switch, Littelfuse fuse holders and branch circuit fuses, terminal strips, a
G.E. (or equal) transformer to provide a 115 Volt control circuit, master control relay, Minarik 90 Volt DC motor controller (for the turntable drive), heating system contactor, and an IEC-style motor circuit protector with thermal overload and short circuit protection.
An equipment power on pushbutton, an emergency stop pushbutton are provided on the front door of the main electrical enclosure, along with the reservoir heating system’s Watlow digital temperature controller. Machine start/stop controls are provided on the side of the enclosure facing the front of the machine. Buttons and lights are Allen-Bradley brand.
The machine is wired per NEC (NFPA 70) and NFPA 79 electrical standards, ready for connection to your electrical service.
RTW Controls
Electric Heat
Electric Heat for Wash/Rinse Tank. Consists of (2) Indeeco brand 12 kW screw-plug immersion heaters capable of heating tank contents from 70 to 140 degrees (F) in one hour. The heaters have stainless steel elements and fittings, with cast iron NEMA 4 conduit boxes. One heater is located in the wash compartment and one heater is located in the rinse compartment. The Rinse heater is made from Incoloy to be used with straight water.
A Watlow brand temperature controller mounted on the door of the main electrical enclosure provides digital read-out and control of solution temperature in the wash tank. A stainless steel type-J thermocouple located in the tank provides an input signal to the controller, which switches the heaters on and off to maintain setpoint temperature.
Insulation for Heated Wash Tanks. Consists of a 2″ thickness of fiberglass batting on all exterior tank walls, held in place by a 14 gauge stainless steel jacket. Also includes stainless steel covers for open areas of tank.
Bag Filtration
Bag Filtration
Consists of a floor-mounted bag filter housing and a filter bag rated at 50 microns. The 4″ diameter by 12″ tall stainless-steel housing is over-sized for less frequent filter change-outs, and the unit is piped between the spray pump and the spray nozzles in the Washer. The housing includes a stainless-steel internal basket for holding one filter bag, and the hinged stainless-steel cover is held in place with three eyebolts. Inlet and outlet pressure gauges are also provided.
FREQUENTLY ASKED QUESTIONS
How do I get the machine to my facility?
ALMCO can help arrange a truck shipment to get the machine to your facility. You may need to work with a local machine rigging company to place the machine properly in your facility.
How do I get the machine installed and set up to run at my facility?
After the purchase of a machine, ALMCO will provide installation, unloading and set-up instructions. You can also pay to have an ALMCO representative on site during the installation to ensure the machine is running properly and your operators are trained on using the system.
Do I need to purchase special cleaning chemical compounds to run in the system?
ALMCO carries a line of chemicals including cleaning compounds and rust inhibitors that are sold separately. It is highly recommended that you send in sample parts for testing prior to issuing a purchase order to ensure we find the right cleaning solution for your parts depending on the material and the dirtiness of the parts.
Do I need parts baskets, fixtures, racks or any other accessories to hold my parts?
In some cases parts are too small to stay on the conveyor on their own. ALMCO can help make recommendations for fixtures or baskets used in other customer applications.
What are other facility considerations needed to run this equipment?
You may need an exhaust fan, stack, ducting or a roof opening to allow mist to make its way out of the building where the unit is running. ALMCO offers mist and vapor collectors that integrate into the system and are sold as optional equipment.
How are the tanks cleaned out?
ALMCO provides threaded fittings on the rinse and collection tanks. These are ready for drain valves or piping from tank drain fittings to your wastewater collection system. There is also access doors on the tanks to allow for cleanout.
What if I need a different size machine to accommodate my parts?
If one of ALMCOs stock size units don’t work for your application, our engineers can put together a custom solution built specifically to your requirements. The cost and lead time are also increased with custom modifications.
OPTIONS & UPGRADES
Vapor and Mist Collection
ALMCO will recommend the right system to collect the vapor or mist generated by the cleaning process to ensure the humidity level of your facility is not affected by running the washing system.
PLC Touch Screen
Add processing control and ease of cycle time adjustments with this touch screen human machine interface. Gain access to machine diagnostics and parameter controls.
Preheating Timer
Have your machine solution tank heated up before the shift starts with a seven day programmable timing unit.
Oil Skimming and Wastewater Treatment
For applications involving cleaning oil-based residue off parts, ALMCO offers an oil skimming solution.
RCW Rotary Cabinet Washer Model Comparison
| Model | RTW-20E | RCW-24E | RCW-36E |
|---|---|---|---|
| Loading Type | Top | Front | Front |
| Overall Machine Dimensions (Approximate) | Length 47″ x Width 40″ x Height 57″ | Length 42″ x Width 45″ x Height 104″ | Length 65″ x Width 60″ x Height 78″ |
| Turntable Capacity | 100 lbs. | 500 pounds | 1000 pounds |
| Turntable Diameter (In) | 20 | 24 | 36 |
| Inside Cabinet Height (In) | 17 | 30 | 50 |
| Turntable Load Height (In) | 17 | 34.5 | 34.5 |
| Wash Tank Capacity (Gal) | 45 | 60 | 100 |
| Rinse Tank Capacity (Gal) | N/A | 50 | 50 |
| Wash Pump | 2 HP, 3450 RPM motor | 2 HP, 3450 RPM motor | 5 HP, 3450 RPM motor |
| Wash Flow Rate | 40 GPM @ 35 PSI | 60 GPM @ 40 PSI | 80 GPM @ 45 PSI |
| Rinse Pump HP | N/A | 1 HP, 3450 RPM motor | 1 HP, 3450 RPM motor |
| Rinse Flow Rate | N/A | 40 GPM @ 28 PSI | 40 GPM @ 28 PSI |
| Drain Fitting | 1-1/2″ with shut-off valve | 1-1/2″ with shut-off valve | 1-1/2″ with shut-off valve |
| Turntable Drive | 1/4 HP 90 Volt DC gearmotor | 1/4 HP 90 Volt DC gearmotor | 1/4 HP 90 Volt DC gearmotor |
| Turntable Speed | 6 RPM | 3 RPM | 3 RPM |
| Electric Heated Wash/Rinse | 12 kW screw-plug immersion heaters | 12 kW screw-plug immersion heaters | 12 kW screw-plug immersion heaters |
| Tank Heating Time | 70 to 140 degrees (F) in 1 hour | 70 to 140 degrees (F) in 1 hour | 70 to 140 degrees (F) in 1 hour |
| Tank Insulation | 1″ thick layer of fiberglass | 2″ thick fiberglass batting with SS jacket | 2″ thick fiberglass batting with SS jacket |
| Machine Construction | 304 stainless steel | 304 stainless steel | 304 stainless steel |
| Power Requirement | 460v (Others Available) 3 Phase, 60 Cycle | 460v (Others Available) 3 Phase, 60 Cycle | 460v (Others Available) 3 Phase, 60 Cycle |
| Drive Unit | AC Variable Frequency | AC Variable Frequency | AC Variable Frequency |
| Operator Controls | 110 volts supplied by a transformer within the control box | 110 volts supplied by a transformer within the control box | 110 volts supplied by a transformer within the control box |
| Electrical Controls | Conformance to NEC (NFPA 70) and NFPA 79 electrical standards | Conformance to NEC (NFPA 70) and NFPA 79 electrical standards | Conformance to NEC (NFPA 70) and NFPA 79 electrical standards |
| Electrical Enclosure | NEMA Type 12 panel enclosure mounted on the machine | NEMA Type 12 panel enclosure mounted on the machine | NEMA Type 12 panel enclosure mounted on the machine |
| UL® 508A Electrical Panel Certification | Available for additional cost | Available for additional cost | Available for additional cost |
| Paint | Two coats of Diamond Vogel brand industrial enamel in Lunar White with Midnight Blue accent | Two coats of Diamond Vogel brand industrial enamel in Lunar White with Midnight Blue accent | Two coats of Diamond Vogel brand industrial enamel in Lunar White with Midnight Blue accent |
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