BENDER Greenlee 555C Electric Pipe Bending Machine

Product Overview

The Greenlee 555C electric pipe bending machine is a professional bending tool launched by Greenlee, a subsidiary of Textron. It is designed for various types of conduits and pipes with specifications ranging from 1/2 "to 2", and is mainly used in industrial electrical installation, building pipeline layout, and other scenarios. It can achieve precise and efficient bending operations. The product meets strict safety standards and is equipped with safety designs such as grounding protection and anti pinch point protection. It is paired with multiple sets of specialized bending accessories and detailed parameter tables to adapt to the bending needs of different pipes. The operation process is standardized to reduce operational difficulty.

Core parameters and physical characteristics

Category specific parameters

Dimensions: Height 1118mm (44 "), Width 724mm (28.5"), Depth 521mm (20.5 ")

Weight 118kg (260lb), including accessories, total weight approximately 159kg (350lb)

Power supply requirement: 120 VAC, 20 A GFCI protection circuit, NEMA L5-20 twist lock plug

Environmental adaptability working temperature -20 ℃~49 ℃ (-5 ℉~120 ℉), relative humidity 0~98%

Installation methods: vertical installation, horizontal installation (supports quick switching between two modes)

Adapt pipes and bending accessories

The product adapts to different types of pipes by replacing the bent boots and roller brackets. The core accessory set is as follows:

Attachment Group Type: Compatible with Pipe Core Components (including UPC Number Example)

Rigid single boot set (28008) 1/2 "-2" rigid conduit, 1/2 "-1-1/4" IMC, 1/2 "-2" 40 gauge steel pipe bending boot (78-3310-02548), roller bracket (78-3310-02549)

IMC single boot set (01323) 1/2 "-2" IMC roller bracket assembly (78-3310-01323), to be paired with 02548 rigid/IMC curved boots

EMT single boot set (23803) 1/2 "-2" EMT curved boot (78-3310-02543), roller bracket (78-3310-02544)

PVC coated rigid single boot set (12586) 1/2 "-2" 40 mil PVC coated rigid conduit bending boot (78-3310-02553), roller bracket (78-3310-02554)

Operation process and bending type

（1） Basic operation steps

Equipment settings: Select the corresponding bending shoe and roller bracket, install and fix them, adjust the horizontal screw to level them;

Pipe marking: Mark the bending point on the pipe according to the bending type (such as 90 ° short pipe, offset bending) and parameter table;

Loading positioning: Place the pipe into the groove of the bent boot, align the mark with the front edge of the boot hook, and ensure that the pipe path is unobstructed;

Bending operation: Press the BEND key to start bending, release when approaching the target angle, and short press to fine tune to the precise angle;

Unloading reset: Press the UNLOAD button, rotate the bending shoe in the opposite direction, twist the pipe to detach from the hook, reset to 0 °, and prepare for the next operation.

（2） Main bending types and parameters

Bending type applicable scenario core parameter reference

90 ° short pipe vertical/horizontal pipeline turning minimum short pipe length=deduction value+2 inches, need to compensate for rebound angle

Deviation curve avoids obstacles with a deviation height of 2 "-22", center distance=deviation height x angle coefficient (15 ° coefficient 3.9, 30 ° coefficient 2.0, etc.)

Three curved saddle crossing small obstacles requires marking three bending points, referring to the L1, L2, and Z parameter tables

Four curved saddle crossing large obstacles including straight sections design, requiring marking of four bending points

U-shaped reciprocating pipeline layout angle of 90 °, refer to the Y value and L1 parameter table

Safety operation standards

Electrical safety: Only connect 120V, 20A GFCI protection circuits, do not modify power cords and plugs, and replace damaged cables in a timely manner;

Environmental safety: Do not use in flammable or humid environments, avoid exposure to rain, and wear eye protection equipment during operation;

Mechanical safety: Keep hands away from pinch points such as bent boots and rollers, do not remove protective covers, and do not use equipment as ladders;

Operation safety: Before replacing accessories, the power must be cut off. When handling, ensure that the handle is securely installed (with safety spring clips and elastic pins fixed), and multiple people cooperate to handle heavy components.

Maintenance and troubleshooting

（1） Daily maintenance

The gearbox is designed for sealing and does not require regular oil changes; If the lid is opened for repair, it needs to be cleaned with kerosene and filled with 26 fluid ounces of Mobil ®  634 synthetic oil;

Regularly check the chain tension and maintain appropriate tension by adjusting the eccentric cam and reducer position, with a torque standard of 47 Newton meters (35 foot pounds);

Keep the equipment clean, ensure that the label stickers are clear and readable, and promptly replace worn or damaged bent boots, rollers, and other components.

（2） Common fault handling

Possible causes and solutions for the fault phenomenon

The device is unable to operate due to power supply failure and the switch is not turned on. Check the power supply circuit and confirm that the switch is in the ON position

Excessive bending angle of 1-1/2 "or 2" EMT/IMC compression is too tight. Rotate the adjusting bolt counterclockwise to reduce the compression force

Insufficient bending angle, loose compression, differences in pipe characteristics. Rotate the adjusting bolt clockwise to increase the compression force, or compensate for excessive bending appropriately

Motor overload tripping, mismatched pipe specifications, incorrect installation of rollers/boots. Confirm that the pipe is compatible with the accessories and reinstall the bent boots and rollers

Accessories and Parts Support

The product provides a complete accessory system, covering bending accessories, repair parts, tools and consumables, etc. The core accessories include:

Mechanical accessories: Terminal cover, mounting clip (B91067903), screw terminal kit (B91067901);

Operating parts: Hanging switch (50398393), protractor, pointer kit (52065278);

Repair parts: motor (91869730), bearings, chain (# 60 87P), reducer (90523881).