
Cembre TC055 Cutting Head
Cembre TC055
Thorne & Derrick International are Main UK Stockists and Suppliers of Cembre tools including crimping and cutting types for all constructions of LV MV HV cable including medium/high voltage 11kV/33kV power cables.
The following short article provides useful instructions about how to replace the cable cutting tool blades of the Cembre TC055Â – this cutter has an application range suitable for cutting copper and aluminium cables having a maximum diameter of 55mm.
Note: TC055 cutting head features the same cutting capability as the Cembre HT-TC055 cable cutting tool.
The following excerpts are taken from the Operating Manual of Cembre TC055.
Cembre TC055 is a hydraulic cutting head tool developing a maximum pressure of 10,000 psi for cable and conductor cutting of LV MV HV cables.
For competitive prices, stock availability and technical advice about the Cembre HT-TC055Â tool please do not hesitate to contact us.
Cable Cutting Blade Replacement
Cembre TC055

Fig 2 & Fig 3 Cembre TC055 Blade Replacement
The following instructions should be read in conjunction with the image above.
After extended use the blades of the Cembre TC055 may lose their cutting edge.
Replace the blades as follows:
Lower Cable Cutting Blade
Remove locking pin (4) and open the cutting tool head.
Operate the pump to advance the lower cutter blade (24) until split pins (22 and 23) are visible on the ram (18).
Remove split pins (22 and 23) using a drift and remove the lower cutter blade.
Insert the new blade and secure with spring pins.
♦ Warning:Â Before closing the cutting tool head release the oil pressure and retract the lower cutter blade otherwise the blade may hit the lower blade edge and damage it.
Upper Cable Cutting Blade
With the lower cutter blade fully retracted, the tool head closed and the locking pin (4) fully secured, hold the tool on the blade spacer (1) or (26) in a bench vice (Fig 3).
With a 6mm wrench, unscrew 4 screws (28), remove the two holding plates (29) and the upper cutter blade (25) noting the position of the cutting edge bevel.
Insert the new cutting blade, noting the position of the cutting edge bevel.
Fit the 2 holding plates (29) and secure with 4 screws (28) with relevant washer (30).

Cutting & Crimping Tools
Cable Crimping & Cutting Tools
This post is from a series of articles written to provide advice and guidance on the care and servicing of Cembre cable cutting and crimping tools.
Thorne & Derrick
Key Product Categories: Duct Seals | Cable Cleats | Cable Glands | Electrical Safety | Arc Flash Protection | Cable Jointing Tools | Cable Pulling | Earthing | Feeder Pillars | Cable Joints LV | Joints & Terminations MV HV | Cold Shrink

Cembre PO7000 Hydraulic Foot Pump
Thorne & Derrick International are Main UK Stockists and Suppliers of Cembre tools including crimping and cutting types for all constructions of LV MV HV cable including medium/high voltage 11kV/33kV power cables.
The following short article provides useful instructions about how to correctly maintain the flexible hose in the Cembre hydraulic PO7000 hydraulic pump – supplied with 10 foot long high pressure flexible hose complete with an automatic, female, quick-coupler suitable for connection to a Cembre hydraulic crimping or cutting head.
The following excerpts are taken from the Operating Manual of Cembre PO700.
Cembre PO700 is a foot operated double speed hydraulic pump developing a maximum pressure of 10,000 psi for installing cable crimps, lugs and connectors.
Maintenance Of Flexible Hose

Cembre PO7000 Pump stored in plastic case VAL-P21.
The flexible hose is designed for high-pressure operation and should not be tightly bent, knotted, kinked or squashed.
♦ Warning: Take care when storing the pump in the plastic case, the hose should be coiled in wide loops.
High pressure flexible hoses are subject to a natural ageing process which can result in a reduction in performance potentially affecting safety of the operator and functionality of the hydraulic pump. In order to ensure safe use of the PO7000, Cembre recommends replacing the hose within 10 years from the date printed on the tool fittings. Pumps in the PO7000 range are supplied with a standard or non-conductive hose.
♦ Warning: Before using the pump always check the integrity of the flexible hose and the quick couplers making sure there are no abrasions, cuts, deformations or swellings.

Fig 8 Hydraulic Pump Position For Replacement Of High Pressure Hose
Replacement Of The Pressure HoseÂ
- Hold the pump base (38) in a vice, keeping the hose above the level of the vice
- Using a 19 mm fl at spanner, unscrew the hose from the pump body, while holding the coiled hose
- Carefully clean the thread of the pump body to remove any residual sealing materials
- Restore the gasket (tefl on tape) on the (male) thread of the new hose
- Connect the new hose, tightening the relevant nut to the correct torque ratio: 50 Nm (37 lbf.ft)
- Eliminate air in the hose as follows: unlock the pedal from the latch
- Depress the ball of the female quick coupler fitted to the end of the hose and pump slowly several times, until the oil flows
- Check the oil level and top up as described in operating manual

Cutting & Crimping Tools
Cable Crimping & Cutting Tools
This post is from a series of articles written to provide advice and guidance on the care and servicing of Cembre cable cutting and crimping tools.
Thorne & Derrick
Key Product Categories: Duct Seals | Cable Cleats | Cable Glands | Electrical Safety | Arc Flash Protection | Cable Jointing Tools | Cable Pulling | Earthing | Feeder Pillars | Cable Joints LV | Joints & Terminations MV HV | Cold Shrink

Cembre TC120 Cutting Head
Cembre TC120
Thorne & Derrick International are Main UK Stockists and Suppliers of Cembre tools including crimping and cutting types for all constructions of LV MV HV cable including medium/high voltage 11kV/33kV power cables.
The following short article provides useful instructions about how to correctly clean and store the Cembre model TC120Â cutting head –Â the head is designed for cutting copper, aluminium and telephone cables having a maximum diameter of 120mm.
♦ Warning: Do not attempt to cut steel ropes or steel reinforced cables (ACSR)
For competitive prices, stock availability and technical advice about the Cembre TC120 tool please do not hesitate to contact us.
Cembre TC120
How to Correctly Clean & Store
Cutting Tool Storage

Cembre TC120 provided with a special steel case VAL 120 to safely transport the cutting head and prevent damage
♦ Warning:Â Oil pressure inside the TC120 cutting head must always be completely released before disconnecting the head from the hose.
♦ Warning:Â All maintenance operations must be performed with the head disconnected from the hydraulic pump hose.
The Cembre TC120 cutting head is robust and requires very little daily maintenance – ensuring you follow the instructions below will help to maintain the optimum performance of the tool by cleaning and storing correctly:
Accurate Cutting Head Cleaning
Dust, sand and dirt are a danger for any hydraulic device. It is essential that after every use the cable crimping or cutting tool should be wiped with a clean cloth removing all residue paying special attention to pivots and moveable joints
Replacement Of The Automatic Quick Male Coupler
- To replace the automatic coupler from Cembre TC120 proceed as follows:
- Remove the old coupler.
- Carefully clean the thread to remove old sealant.
- Apply teflon tape to the thread.
- Fit the new coupler and tighten to 30 Nm (22 lbf ft)

Steel Carry Case VAL TC120
StorageÂ
When not in use, the Cembre TC120 tool should be stored and transported in the steel case to prevent damage.
The steel case (VAL TC120) has the following dimensions 590x209x84mm (height) and weighs 4.9kg.

Cutting & Crimping Tools
Cable Crimping & Cutting Tools
This post is from a series of articles written to provide advice and guidance on the care and servicing of Cembre cable cutting and crimping tools.
Thorne & Derrick
Key Product Categories: Duct Seals | Cable Cleats | Cable Glands | Electrical Safety | Arc Flash Protection | Cable Jointing Tools | Cable Pulling | Earthing | Feeder Pillars | Cable Joints LV | Joints & Terminations MV HV | Cold Shrink

Cembre HT51 Hydraulic Crimping Tool
Cembre HT51
Thorne & Derrick International are Main UK Stockists and Suppliers of Cembre tools including crimping and cutting types for all constructions of LV MV HV cable including medium/high voltage 11kV/33kV power cables.
The following short article provides useful instructions about how pure air bubbles correctly from the Cembre hydraulic circuit in relation to model HT51Â cutting tool – built in safety valve also by-pass the oil supply when maximum pressure has been reached.
The following excerpts are taken from the Operating Manual of Cembre HT51 hydraulic crimping tool – however this information applies to the following tool model variants Cembre HT51-KV (insulated version).
Cembre HT51 crimping tool is lightweight and ideal for use in working confined switchgear and other LV-HV cable jointing, splicing and terminating applications.
The hydraulic crimping tool features spring loaded handles allowing the Cembre die sets to be advanced with one hand – the other hand is free to position the electrical connector or cable lugs prior to crimping.
For competitive prices, stock availability and technical advice about the Cembre HT51 tool please do not hesitate to contact us.
Purging Air Bubbles From Cembre HT51 Crimping Tools

HT51 Crimping Tool Position For Maintenance Operations
Air in the hydraulic circuit may affect the performance of the crimping tool. For example no lower die advancement, slow advancement of the lower die and lower die pulsating would all cause issues.
If this is the case proceed as follows:
4.1) To Purge Air Bubbles From Hydraulic Circuit
a – Hold tool upright in a vice with handles open (Fig 3).
b – Unscrew the main handle (04) from the body (13) to expose the rubber oil reservoir (03).
c – Remove reservoir cap (02).
d – Operate moveable handle (36) several times, in order to advance the tool ram (16).
e – Press the pressure release lever (44) to retract the ram (16), discharge oil pressure from the circuit and return all oil to the reservoir.
f – Repeat points (d – e) five times, to ensure all air bubbles in the hydraulic circuit are purged into the reservoir.
g – Remove all air from reservoir.
If the oil level is low top up as directed below.
h – Fit reservoir cap (02).
i – Assemble main handle (04) to tool body.
If the tool continues to malfunction return the tool for service.
Oil Top Up
Every six months check the oil level in the reservoir. If necessary, top up the oil level to the upper lip of the reservoir and remove all air from the reservoir (as described above).
Always use clean recommended oil – AGIP ARNICA 32 or SHELL TELLUSTX 32 or equivalent for HT51 and AGIP ITE360 or ESSOTRANSFORMER P60 or equivalent for HT51-KV
♦ Warning:Â Â Do not use old or recycled oil
♦ Warning:Â Â Do not use hydraulic brake fluid
HT51-KV tool contains oil with a high insulating power so it is imperative that you don not pollute it with other types of oil!

Cembre HT51 supplied with protective carrying case, tool manual and crimp die sets

Cutting & Crimping Tools
Cable Crimping & Cutting Tools
This post is from a series of articles written to provide advice and guidance on the care and servicing of Cembre cable cutting and crimping tools.
Thorne & Derrick
Key Product Categories: Duct Seals | Cable Cleats | Cable Glands | Electrical Safety | Arc Flash Protection | Cable Jointing Tools | Cable Pulling | Earthing | Feeder Pillars | Cable Joints LV | Joints & Terminations MV HV | Cold Shrink

Cembre B-TC950 Cutting Tool
Cembre B-TC950
Thorne & Derrick International are Main UK Stockists and Suppliers of Cembre tools including crimping and cutting types for all constructions of LV MV HV cable including medium/high voltage 11kV/33kV power cables.
The following short article provides useful instructions about how to correctly use the Cembre model B-TC950 cutting tool – prolonged use of the cordless hydraulic cutting tool can cause bluntening of the blades when cutting conductors, wires and cables.
The following excerpts from the Operating Manual of Cembre B-TC950 – however this information applies to the following tool model variants B-TC950A B-TC950E B-TC950T.
Cembre B-TC50 is a battery operated cable cutting tool suitable for diameters up to 95mm outside diameter and features their new Li-Ion 18V 4 Ah batteries providing improved cutting speed and cutting force with double-speed action for jointing and terminating copper or aluminium type cables.
For competitive prices, stock availability and technical advice about the Cembre B-TC950 tool please do not hesitate to contact us.
Instructions For Use – Model B-TC950
CEMBRE B-TC950

- Locking lever
- Upper cable cutting blade
- Lower cable cutting blade
- Handle grip
- Operating button
- Pressure release button
- Battery
- Battery capacity indicator
- Battery check button
- Battery release
- LED worklight
- Ring for shoulder strap
♦ Warning:Â Before starting any work, check the battery charge and recharge if necessary.
Follow the instructions in the battery charger user manual.
The tool can be easily carried using either the handle or the shoulder strap attached to rings (12).
To replace the battery, remove it by pressing the release button (10)Â then insert the new battery, sliding it into the guides until it locks.
Cutter Head Rotation
For ease of operation the tool head can rotate through 335° allowing the operator to work in the most comfortable position.
♦ Warning:Â Do not attempt to rotate the cutting head when the hydraulic circuit is pressurised.
Setting

Figure 3 & 3a Insert the conductor between the blades up to the cutting point
Insert the conductor between the blades, up to the desired cutting point (Fig. 3). For a running conductor, press the locking lever (1) and open the tool head (Fig 3a).
Fully retract the lower blade (3) before attempting to open the tool head. With the conductor on the lower blade (3), close the tool head and fully secure the lever (1).
♦ Warning:Â Before commencing the cutting operation ensure that the lever (1) is fully secured: partial closure may damage the tool head.
Cutting Blade Advancement
Press the operating button (5) (Ref. to Fig. 3) to activate the motor-pump. The ram will gradually move forward until the lower blade (3) touches the conductor.
To halt the advancement release the button (5) and the motor will cut out.
♦ Warning:Â Make sure the blade is exactly positioned on the desired cutting point otherwise re-open the blade following instructions and reposition it.
Cable Cutting
Firmly hold the tool and operate the button (5) to gradually move the lower blade (4) to cut through the conductor.
When the cut is performed release the button (5) to ensure the maximum pressure relief valve isn’t activated.
LED Worklights
Whilst the tool is in operation, the work area is illuminated by two high luminosity LED Worklights that switch off automatically at the end of the cycle.
Blade Retraction
By operating the pressure release button (6) the ram will retract and open the lower blade.
Battery Status

Figure 4 Battery Level Indicator
The battery is equipped with LED indicators that indicate the remaining battery life at any time by pressing the adjacent button (9):
- 4 LEDs illuminated: fully charged
- 2 LEDs illuminated: 50 % capacity
- 1 LED flashing: minimum charge, replace the battery
Worklights (11) illuminated combined with an alarm audible when the operating button (5) is pressed (Fig.4) is an indication that the battery voltage has dropped below a minimum safety threshold
Under these conditions the tool will not start and the battery should be replaced or recharged (80 minutes to fully recharge battery).
After each working cycle and the extraction of the battery from the tool, an integrated battery cut-off device will operate after approximately 70 s.
The LED nearest to button (9) will then flash 5 times each 14 s approx. The battery will be reactivated when it is reintroduced into the tool and the operating button is pressed.
Using The Battery Charger
Carefully follow the instructions in the battery charger user manual.

Cutting & Crimping Tools
Thorne & Derrick
Key Product Categories: Duct Seals | Cable Cleats | Cable Glands | Electrical Safety | Arc Flash Protection | Cable Jointing Tools | Cable Pulling | Earthing | Feeder Pillars | Cable Joints LV | Joints & Terminations MV HV | Cold Shrink