ZX Modular Boring Tools

Boring just became interesting

ZX Modular Boring Tools (MBT) offer versatility and economy when machining bores, counter-bores, tapers, threads, and complex contours inside components, over a wide range of diameters. These tools offer the highest cutting speeds and material removal rates available.

The MBT series is available in single-slide (MBT-S) and twin-slide (MBT-T) versions. All MBT tools feature 2:1 actuation ratio for easy programming.

MBT50 back-end

The unique modular design makes adjustment of length and configuration not only fast and easy, but cost effective too. The MBT range can simply be converted for valve seat pocket machining, bottle boring or other extended-reach applications with the addition of extensions and pilot supports – adding to their versatility and adaptability, whilst eliminating the need for additional tools. With a long tool slide stroke, that is supplemented by using different cartridges, they can cover an even wider diameter range – no need to change the tool slide(s) or remove the head from the machine. The tools can perform versatile forward and back boring operations, such as back counter-bores, internal grooves, faces, and bottle bores. Stepped and tapered bores are machined without tool changes offering exceptional concentricity. Accuracy is maintained as the tool slide(s) adjusts for various diameters whilst the tool stays on the same bore centerline.

Product features:

  • Bottom-facing capability available for blind bores.
  • Twin-slide tools offer balanced cutting forces for high feeds and speeds and high material removal rates.
  • Internal through-tool coolant is standard.
  • Fully enclosed actuation mechanism: No chip packing.
  • Internal forward hard stop and anti-torque features protect the tool in case of mishaps.
MBT50 Cartridge
Set of MBT with bonnet
Valve seat Pocket
ZX Seat Pocket Machined
MBT250 on machine

Modular Design. Increased Functionality.

From short bores to long components with one extendable modular system.

ZX Tooling Stacker
Modular Boring Tool Grooving
MBT50 modular connection
Bottle Boring process
Seat Pocket Component
MBT75 on machine
MBT Single Cartridge
Modular Boring Tool Burnishing Slide

Modular Boring Tools video highlights:

To see the full range of ZX videos please visit YouTube

Cogsdill MBT75 boring and profiling

Cogsdill MBT Bottle Boring tool on HBM

Cogsdill MBT Seat Pocket Machining

We hold standard Modular Boring Tools in stock – other sizes available upon request.

MBT 50

MBT-50-S Modular Boring Tool (single slide)

MBT-50-S Through end cap Bottoming end cap
Tool Diameter ⌀50mm ⌀50mm
Maximum Stroke 23mm 18mm
Standard Capacity
(default configuration)
⌀50–96mm ⌀68–104mm
Maximum Capacity
(extended cartridge/slide)
⌀72–118mm ⌀76–112mm
Work Length L1 ⌀A 305mm : ⌀50mm 340mm : ⌀68mm
L4 ⌀D 520mm : ⌀155mm 555mm : ⌀155mm
MBT75 side-on

MBT 75

MBT-75-S Modular Boring Tool (single slide)

MBT-75-S Through end cap Bottoming end cap
Tool Diameter ⌀75mm ⌀75mm
Maximum Stroke 32mm 22mm
Standard Capacity
(default configuration)
⌀75–139mm ⌀75–119mm
Maximum Capacity
(extended cartridge/slide)
⌀150–214mm ⌀150–194mm
Work Length L1 ⌀A 350mm : ⌀75mm 386mm : ⌀75mm
L2 ⌀B 414mm : ⌀86mm 450mm : ⌀86mm
L3 ⌀C 454mm : ⌀125mm 490mm : ⌀125mm
L4 ⌀D 622mm : ⌀155mm 658mm : ⌀155mm
MBT100 side-on

MBT 100

MBT-100-S Modular Boring Tool (single slide)

MBT-100-S Through end cap Bottoming end cap
Tool Diameter ⌀100mm ⌀100mm
Maximum Stroke 45mm 23mm
Standard Capacity
(default configuration)
⌀100–190mm ⌀100–146mm
Maximum Capacity
(extended cartridge/slide)
⌀184–274mm ⌀184–230mm
Work Length L1 ⌀A 454mm : ⌀100mm 483mm : ⌀100mm
L2 ⌀B 486mm : ⌀125mm 515mm : ⌀125mm
L4 ⌀D 654mm : ⌀155mm 684mm : ⌀155mm
ZX125 Modular Boring Tool to suit HBM machine

MBT 125

MBT-125-S Modular Boring Tool (single slide)

MBT-125-S Through end cap Bottoming end cap
Tool Diameter ⌀125mm ⌀125mm
Maximum Stroke 54mm 30mm
Standard Capacity
(default configuration)
⌀125–233mm ⌀125–185mm
Maximum Capacity
(extended cartridge/slide)
⌀212–320mm ⌀212–272mm
Work Length L1 ⌀A 524mm : ⌀125mm 556mm : ⌀125mm
L4 ⌀D 692mm : ⌀155mm 725mm : ⌀155mm

MBT Comparison Table

TECHNICAL DATA UNITS MBT50 MBT75 MBT100 MBT125
⌀A : Nominal Tool Diameter  mm 49.8 73.0 100.0 123.8
⌀B : Tool Diameter (first stage) mm 86
⌀C : Tool Diameter (second stage) mm 125 125
D : Tool Diameter (third stage) mm 155 155 155 155
RS : Max. Radial Stroke (through / bottoming) mm 23 18 32 22 45 23 54 30
⌀X : Min. Standard Capacity (through / bottoming) mm 50 68 75 75 100 100 125 125
⌀Y (through) / ⌀Z (bottom) : Max. Extended Range * mm 118 *  112 * 214 * 194 * 274 * 230 * 320 * 272 *
CL : Cartridge Length mm 35.0 44.4 50.8 63.5
L0 : Max. Back Boring Work Length ⌀A (through-type) mm 280 305.6 403.2 460.5
L1 (through) / L5 (bottom) : Max. Working Length ⌀A mm 305 340 350 386 454 483 524 556
L2 (through) / L6 (bottom) : Max. Working Length ⌀B mm 414 450 486 515
L3 (through) / L7 (bottom) : Max. Working Length ⌀C mm 454 490
L4 (through) / L8 (bottom) : Max. Working Length ⌀D mm 520 555 622 658 654 684 692 725
AL : Adapter Length 4-pin (standard) / 2-pin (option) mm 95.3 104.3 95.3 104.3 95.3 104.3 95.3 104.3
Maximum Speed RPM 800 800 800 800
Stoke Ratio 2 to 1 2 to 1 2 to 1 2 to 1
Repeatibility Accuracy mm 0.003 0.003 0.003 0.003
Backlash mm +/- 0.025 +/- 0.025 +/- 0.025 +/- 0.025
Boring Accuracy H7 H7 H7 H7
Max. chip removal on 080M46 steel
Facing D.O.C./mm 3 3 3 3
Boring D.O.C./mm 3 6 7 7
Rapid Traverse M/min 100 100 100 100
Roughness Ra 0.8 0.8 0.8 0.8

Special MBT Tools are also available in larger and smaller diameter sizes or equipped with special tool slides operating in bi-directional ways (for roughing and finishing without need to change the cartridge).
* Maximum Range requires cartridges and tool slide changes (see Cartridge charts).

Insert Cartridges Diagram

Cartridges and Tool Slides

Broad size range: Each tool has a long tool slide stroke that is supplemented by using different cartridges and toolslides to cover an ever wider diameter range. No need to change the toolslide(s) or remove the head from the machine.

Other special cartridge designs available on request: e.g. Burnishing Slide.

Twin-Pocket Insert Cartridge ZX Tools

Twin pocket insert cartridge

Twin-slide ZX-MBT Modular Boring Tools

Twin slide MBT

Roller Burnishing Tool Cartridge

Roller burnishing cartridge

ZX MBT Modular Boring Tools pick-up Station Automated Tooling

MBT pick up station

Cartridges and Tool Slides Comparison Table

TECHNICAL DATA MBT50 MBT75 MBT100 MBT125
CL : Cartridge Length 35.0mm 44.4mm 50.8mm 63.5mm
RS : Max. Radial Stroke
(through end)
23mm 32mm 45mm 54mm
RS : Max. Radial Stroke
(bottoming end)
18mm 22mm 23mm 30mm

Through End Maximum Range (⌀X–⌀Y)

SR : TOOLSLIDE
SLIDE RADIUS
CR : CARTRIDGE CUT RADIUS
MBT50 MBT75 MBT100 MBT125
16.5mm 21mm 23mm 35.5mm 23mm 35.5mm 27mm 44mm
8.5 mm 50–96mm 59–105mm
15.0 mm 63–109mm 72–118mm
14.5 mm 75–139mm 100–164mm
27.0 mm 100–164mm 125–189mm 100–190mm 125–215mm
39.5 mm 125–189mm 150–214mm 125–215mm 150–240mm
56.5 mm 159–249mm 184–274mm
35.5 mm 125–233mm 159–267mm
52.5 mm 159–267mm 193–301mm
62.0 mm 178–286mm 212–320mm

Bottoming End Maximum Range (⌀X–⌀Z)

SR : TOOLSLIDE
SLIDE RADIUS
CR : CARTRIDGE CUT RADIUS
MBT50 MBT75 MBT100 MBT125
16.5mm 21mm 23mm 35.5mm 23mm 35.5mm 27mm 44mm
15.0 mm 68–104mm 76–112mm
14.5 mm 75–119mm 100–144mm
27.0 mm 100–144mm 125–169mm 100–146mm 125–171mm
39.5 mm 125–169mm 150–194mm 125–171mm 150–196mm
56.5 mm 159–205mm 184–230mm
35.5 mm 125–185mm 159–219mm
52.5 mm 159–219mm 193–253mm
62.0 mm 178–238mm 212–272mm

Other special cartridge designs available on request: e.g. Burnishing Slide.

We’ll design tools specifically for your needs

ZX Systems

ZX Systems Tool Product Range

Burnishing Tools

Burnishing

Deburring Tools

Deburring Tool Collection

Shefcut Reaming

Shefcut Reaming Tools Catalog

Recessing Tools

Recessing Tool Collection