Rothenberger COLLINS CLASSIC 22A

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Overview

Function Description
Important Technical Specifications
Usage Features
Maintenance Features
Central lubrication system
Changing the jaws
Disposal
Repair service

The COLLINS CLASSIC 22A is a threading machine designed for cutting and threading pipes and rods. It is manufactured by ROTHENBERGER and comes with an instruction manual that covers its operation, maintenance, and technical specifications.

Function Description

The COLLINS CLASSIC 22A machine consists of several key components that work together to perform threading operations. It features a drive motor that rotates both clamping chucks, an automatic double clamping chuck for securing the workpiece, and a pipe cutter for cutting the workpiece to length. An internal deburrer is integrated to smooth the edges of the cut pipe. The machine also includes a die head for making threads on the workpiece, an oil pump that lubricates and cools with thread oil, and a tool carriage guided on both sides with a foot-fed mechanism. For safety, it is equipped with a safety pedal and a coasting restrictor.

The machine is designed to cut or turn threads on workpieces such as pipes or rods. It can be operated in both automatic and standard die head configurations, offering flexibility for various threading tasks. The automatic die head allows for quick and efficient threading, while the standard die head provides robust performance for general applications.

Important Technical Specifications

The COLLINS CLASSIC 22A offers a range of technical specifications to accommodate different threading needs.

Threading Capacity:
- Pipe: ½" thru 2"
- Bolt: ¼" thru 2¼"
Cutting:
- Wheel type: with sliding roller block
- Cutting capacity: Pipe ½" thru 2", Bolt ¼" thru 1"
Reamer:
- Adjustable 5-flute cone-type, right-hand
- Reaming capacity: Pipe ½" thru 2"
Chuck:
- High-speed automatic chuck with 8 replaceable and reversible jaws, 4 in front and 4 in rear.
Oil Pump:
- Gerotor-type, reversible on right and left machines
- Switch, Operating: Single-phase machines: heavy-duty, drum-type, release-off-thread
- Three-phase machines: heavy-duty, rotary-type, release-off-thread 1, thread 2
- Switch, Foot: Heavy-duty, oil and watertight, with safety guard, ON-OFF
- Switch, Directional (right & left machine only): rocker-type, right-off-left
Motor:
- Single-Phase: 115V AC/DC, 50-60 Hz, 20 amps., 1/2 hp, 6-brush universal type; 230V AC/DC, 50-60 Hz, 10 amps., 1/2 hp, 6-brush universal type
- Three-Phase (optional, available at extra cost): 230V AC, 50 or 60 Hz, 5.8/4.7 amps, 2/1/2 hp, 3400/1700 rpm, two-speed induction type; 380/400V AC, 50 or 60 Hz, 3.1/3.0 amps, 2/1/2 hp, 2800/1400 rpm, two-speed induction type
- Spindle RPM (free-running): Standard or right & left single-phase machine: 54 rpm with standard gearbox, 100 rpm with optional high speed gearbox
- Right & left three-phase machine: 60 rpm (thread 1), 120 rpm (thread 2)
Noise Level:
- Single-phase machines: 84 dB max. ("A" scale, slow response)
- Three-phase machines: 81 dB max. ("A" scale, slow response)
Gearbox:
- Standard or right & left single-phase machine: helical gear construction with 13.1:1 reduction (optional low speed gearbox has 16.7:1 and high speed gearbox has 8.0:1 reduction.)
- Right & left three-phase machine: helical gear construction with 3.84:1 reduction
Shipping Weight (less die heads):
- Single-phase machines: 235 lb.
- Three-phase machines: 265 lb.
Standard Equipment:
- Thread Cutting Oil: 1 gal. Thred-O-Matic Oil
- Hex Keys: ¼", ⁵⁄₁₆", ³⁄₈", ½", ⁵⁄₈", ¾"
Accessories:
- Grooving/Chamfering Head (No. 12200): ¾" - 2"
- Reaming/Chamfering Head (No. 13384): ¼" - 2"
- Pipe Support (No. 13894): for long work
- Ball Bearing Pipe Support (No. 13206): and 13207
- Pipe Support Folding: long 1 ¼" pipe, a stationary pipe stand can be assembled for extra long work
- Baffle Plate (No. 00155): prevents all oil sump to prevent oil spillage
- Machine Cover (No. 00154): durable fitted vinyl/canvas cover
- Oil Spout Assembly (R04200156R): carriage-mounted flex hose for additional oiling

Usage Features

The COLLINS CLASSIC 22A is designed for ease of use and efficiency. To begin operation, mount the machine on a stand or bench as instructed. Pour one gallon of Thred-O-Matic oil into the oil sump; this special oil is designed to stand up under high-speed operation and ensure good thread quality. For first 10 days of operation, lubricate the spindle bearings every 4 hours with SAE 30 lubricating oil.

The machine is equipped with two electrical switches: a safety foot switch and a THREAD/OFF/RELEASE (T.O.R.) switch. The right- and left-hand 22As have a third switch; a right- and left-hand directional switch. The functions of these switches are as follows:

The safety foot switch is designed to provide the operator with a rapid method of stopping electrical power to the machine in an emergency.
The THREAD/OFF/RELEASE switch is the main operating switch. The THREAD position closes the jaws and rotates the spindle. The OFF position stops the machine. The REVERSE position opens the jaws.
The right and left hand switches change the direction of the motor and therefore the direction of the spindle.

After making proper electrical connection, step on the foot switch and move the THREAD/OFF/RELEASE switch to THREAD position in order to check oil flow. When the die head is in the down position, oil will flow through the die head. If oil flow bypasses the pressure relief valve, it indicates an issue.

For threading pipes or rods, the standard 22A requires the operator to step on the foot switch, move the T.O.R. switch to THREAD, and turn the die head to open jaws. For right and left 22A, the process is similar, but involves selecting the appropriate direction for the die head. The machine allows for precise adjustment of the die head and carriage to ensure accurate thread cutting.

The reaming process involves extending the internal deburrer, rotating the reamer arm, and applying pressure to remove burrs. Draining off the oil is a simple process, with the oil drainage screw located at the bottom of the machine.

Maintenance Features

Regular maintenance is crucial for the longevity and safe operation of the COLLINS CLASSIC 22A.

Threading oil maintenance: Change threading oil every 40 hours of use or when threading oil has become contaminated or dirty. Drain used oil into a container and dispose of it properly. Replace the drain plug and pour 3-4 liters of ROTHENBERGER-oil into the oil sump.
Carriage rails and gear: Keep clean and oil frequently with machine oil.
Ring gear: Remove spindle cover and check ring gear every six months. Apply additional high temperature graphite gear lubricant as needed.
Motor: Check motor for brush wear every six months. If motor lacks power due to a dirty commutator, use a commutator cleaning stick or fine emery cloth. Lubrication is not required as all motors have sealed ball bearings.
Gear case: It is permanently lubricated and requires no maintenance.
Brake band: If slippage of stock occurs after wire brushing jaws, then: stop the machine, remove spindle cover, tighten brake adjustment bolt, start machine, turn switch "OFF" and spindle should coast one revolution. If not, repeat steps. Replace spindle cover.
Thread jaws: Keep sharp and free of chips at all times.

Central lubrication system:

Proper lubrication of the spindle bearings and brake band is essential. Check the reservoir oil level with SAE 30 weight lubricating oil. Once a day, before starting the machine, lift and release the lubricator plunger six times. During normal operation, lift and release the plunger four times every two hours of operation. Replace the filter element once a year.

Changing the jaws:

Keep clean with wire brush to avoid slippage. To replace jaws: unplug machine, remove spindle cover, remove jaw retaining rings and slide jaws off shaft. If the machine has been used, allow it to cool before handling. Inspect jaw shafts for wear. Install replacement jaws so that single row jaws (1) are opposite each other. Also alternate single and double jaws between front (3) and rear chucks (4).

Disposal:

Metal, electrical and electronic parts of the unit are valuable materials and can be recycled. Approved and certified recycling companies can be used for this purpose. Dispose of materials according to local and national regulations.

Repair service:

ROTHENBERGER USA has several Authorized Service Centers located throughout North America. Contact your retailer or ROTHENBERGER USA for the nearest service center.