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    CBH Micro Finish Boring Tools - Precision Manufacturing from China Suppliers and Factory for Hole Making Applications
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    CBH Micro Finish Boring Tools - Precision Manufacturing from China Suppliers and Factory for Hole Making Applications

    Discover CBH micro finish boring tools, among Derek's most competitive products, now widely utilized in the hole-making industry for over a decade. Manufactured in China, our high-quality boring tools are designed for various applications, including boring, back-boring, and external boring. Our tools feature a CK connector that ensures repeat assembly accuracy within an impressive 0.003mm. As a leading supplier and factory in the industry, we take pride in delivering precision and reliability to meet your engineering needs
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      Product Detail

      derek DCK Modular Boring Tools
      High Precision, High Strength and Easy Operation — the Best Style of Connection
      DCK Modular Boring Tools Details
      • Change locking force to axial tension by using 30° taper screws. The boring head and arbor would be attached closely. (Fig A)
      • Modular design makes the setting of boring range and depth more easier. Reducers, extensions and chamfering rings provide multifunctional work. (Fig B)
      • High working efficiency brings down the production cost due to high precision of connection.
      derek CBH Micro Boring Tools — Characteristics
      CBH Micro Boring Tools Characteristics
      • Adjusting rate 0.01mm, adjusting rate reaches 0.001mm by vernier scale.
      • Cartridge have two different inserts TC and TP for option. Cartridge could be mounted in opposite direction for back boring.
      • The small diameter tools with range of 20–203mm use CK connector, which compatible with mainstream products on the market.
      • The large diameter tools with range of 148–1275mm use the bridge structure, with 70%–90% aluminium, rigid structure and lightweighting, which make cutting more efficient and stable.
      • External boring tools have CBH-M and CBH-L for option, which can reach external boring range: 13–715mm.
      • All series have internal cooling design, which is easy for chip removal, easily cooling, and ensures machining stability.
      Specification Figure Boring head Specification Figure Boring head Specification Figure Boring head
      CBH 1-1 Specification 1
      TPGH0802      		 DCK1-CBH20-36 CBH 4-1 Specification 1
      TCMT1102 (With) TPGH1103 (For choice)      		 DCK4-CBH41-74 CBH 1-1 Specification 3
      TCMT1102 (For choice)      		 DCK4-CBH41-74
      1-2 4-2 1-2
      1-3 4-3 1-3
      2-1 DCK2-CBH25-47 5-1 DCK5-CBH53-95 2-1 DCK4-CBH41-74
      2-2 5-2 2-2
      2-3 5-3 2-3
      3-1 DCK3-CBH32-60 6-1 DCK6-CBH68-150 DCK6-CBH100-203 3-1 DCK6-CBH68-150 DCK6-CBH100-203
      3-2 6-2 3-2
      3-3 6-3 3-3
      Notice: Cartridge CBHx-1 is included in quotation, while CBHX-2 and CBHX-3 shall be ordered separately.
      derek CBH Back-Boring Instructions
      CBH Back-Boring Instructions
      In order to check the feasibility of the back boring operation and select the best tool combination, these values should be calculated as follows:
      C > (D + d) / 2
      C — Minimum entry bore diameter
      D — Back bore diameter
      d — Diameter of boring head
      ⚠ Anti-clockwise spindle rotation required.
      derek CBH Finish Boring Tool
      CBH Finish Boring Tool
      Specification Boring Range Back boring Range Cartridge Insert Screw Wrench Weight
      L1 L B L2 L3
      DCK1-CBH20-36 29.5 32.5 20-26 10 10.5 19 - CBH1-1 TPGH0802 M020D055 Q06 0.06
      29.5 32.5 25-31 10 10.5 19 30-31 CBH1-2 0.06
      29.5 32.5 30-36 10 10.5 19 30-36 CBH1-3 0.06
      DCK2-CBH25-47 32.5 35.5 25-33 12.5 11.5 21 - CBH2-1 0.12
      32.5 35.5 32-40 12.5 11.5 21 36-40 CBH2-2 0.12
      32.5 35.5 39-47 12.5 11.5 21 39-47 CBH2-3 0.12
      DCK3-CBH32-60 35 40 32-42 16 10 25 - CBH3-1 0.20
      35 40 41-51 16 10 25 46-51 CBH3-2 0.20
      35 40 50-60 16 10 25 50-60 CBH3-3 0.20
      DCK4-CBH41-74 43 47 41-54 20 14 29 - CBH4-1 TCMT1102 (With) TPGH1103 (For choice) M025W060 M030W070 Q08 0.39
      43 47 50-63 20 14 29 53-63 CBH4-2 0.39
      43 47 61-74 20 14 29 61-74 CBH4-3 0.39
      DCK5-CBH53-95 53 57 53-70 25.5 19 34 62-70 CBH5-1 0.80
      53 57 65-82 25.5 19 34 65-82 CBH5-2 0.80
      53 57 78-95 25.5 19 34 78-95 CBH5-3 0.80
      DCK6-CBH100-203 67.2 71 68-100 32.5 22 45.2 80-100 CBH6-1 1.80
      67.2 71 94-126 32.5 22 45.2 94-126 CBH6-2 1.80
      67.2 71 118-150 32.5 22 45.2 118-150 CBH6-3 1.80
      DCK6-CBH68-150 67.2 71 100-153 45.5 22 45.2 112-153 CBH6-1 2.53
      67.2 71 126-179 45.5 22 45.2 126-179 CBH6-2 2.53
      67.2 71 150-203 45.5 22 45.2 150-203 CBH6-3 2.53
      DCK7-CBH100-203 83.2 87 100-153 45.5 22 45.2 112-153 CBH6-1 3.96
      83.2 87 126-179 45.5 22 45.2 126-179 CBH6-2 3.96
      83.2 87 150-203 45.5 22 45.2 150-203 CBH6-3 3.96
      ✔ Suitable: DEREK、KYOCERA Or SUMITOMO Insert
      Feature
      With internal cooling supply.
      With balanced structure for high machining precision accuracy.
      High effectiveness with back-boring function.
      With side scale for adjustment of μm grade.
      derek Product Display
      Tool setter alignment

      Tool Setter Alignment

      Machine the machine tool

      Machine the Machine Tool

      The surface of workpiece after machining

      The Surface of Workpiece After Machining

      derek FM-CBH Large Diameter Boring Tool For Finishing
      CBH Micro Boring Tools 1CBH Micro Boring Tools 2
      Specification Boring range H Adapter size B-Boring range Work depth Insert Weight
      FMS-CBH148215 148-215 109 FMS 23-90 30 TCMT1102 / TPGH1103 3.18
      FMS-CBH198265 198-265 109 FMS 73-140 30 3.71
      FMS-CBH248315 248-315 109 FMS 123-190 30 4.19
      Specification Picture Insert Screw Wrench Weight
      CBH5-1-TC-V CBH Cartridge TCMT1102 M025W060 Q08 0.04
      CBH5-1-TP-V TPGH1103 M030W070 Q08 0.04
      ✔ Suitable: DEREK、KYOCERA Or SUMITOMO Insert
      Item Specification Picture Weight
      Adapter size HSK-A-FMS Adapter size -
      BT-FMS -
      SK-FMS -
      BBT-FMS -
      CAT-FMS -
      Extension Aluminum bridge FMS40-148 Extension Aluminum bridge 1.46
      FMS40-198 1.99
      FMS40-248 2.47
      Finish boring Aluminum slider Finish boring Aluminum slider
      FMA34-S17 0.29
      Finish boring head Finish boring head
      A34-CBH5395 0.55
      Balancing Aluminum weight Balancing Aluminum weight
      FMA34-S17-PZK 0.86
      Feature
      70–90% of material is made from Aluminum.
      With internal cooling supply.
      Balanced: G6.3; 1,000 rpm.
      derek FM-CBH Large Diameter Boring Tool For Finishing
      CBH Micro Boring Tools 9CBH Micro Boring Tools 10
      Specification Boring range H Adapter size B-Boring range Work depth Insert Weight
      FMX-CBH298395 298-395 113 FMX 173-270 25 TCMT1102 / TPGH1103 9.50
      FMX-CBH378475 378-475 118 FMX 253-350 25 11.26
      FMX-CBH458555 458-555 123 FMX 333-430 25 13.19
      Specification Picture Insert Screw Wrench Weight
      CBH5-1-TC-V CBH Cartridge TCMT1102 M025W060 Q08 0.04
      CBH5-1-TP-V TPGH1103 M030W070 Q08 0.04
      ✔ Suitable: DEREK、KYOCERA Or SUMITOMO Insert
      Item Specification Picture Weight
      Adapter size HSK-A-FMX Adapter FMX -
      BT-FMX -
      SK-FMX -
      BBT-FMX -
      CAT-FMX -
      Extension Aluminum bridge FMX40-298 Extension Aluminum bridge 5.33
      FMX40-378 7.09
      FMX40-458 9.02
      Finish boring slider Finish boring slider
      FMA34-S24-PZK 1.02
      Finish boring head Finish boring head
      A34-CBH5395 0.55
      Balancing weight Balancing weight
      FMA34-S24-PZK 1.56
      Feature
      70–90% of material is made from Aluminum.
      With internal cooling supply.
      Balanced: G6.3; 1,000 rpm.
      derek FM-CBH Large Diameter Boring Tool For Finishing
      CBH Micro Boring ToolsCBH Micro Boring Tools 16
      Specification Boring range H Adapter size B-Boring range Work depth Insert Weight
      FMX-CBH538795 538-795 197 FMX 413-670 25 TCMT1102 / TPGH1103 25.64
      FMX-CBH7781035 778-1035 217 FMX 653-910 25 36.83
      FMX-CBH10181275 1018-1275 217 FMX 893-1150 25 44.26
      Specification Picture Insert Screw Wrench Weight
      CBH5-1-TC-V CBH Cartridge TCMT1102 M025W060 Q08 0.04
      CBH5-1-TP-V TPGH1103 M030W070 Q08 0.04
      ✔ Suitable: DEREK、KYOCERA Or SUMITOMO Insert
      Item Specification Picture Weight
      Adapter size HSK-A-FMX Adapter FMX -
      BT-FMX -
      SK-FMX -
      BBT-FMX -
      CAT-FMX -
      Extension Aluminum bridge FMX40-538 Extension Aluminum bridge 14.77
      FMX40-778 25.96
      FMX40-1018 33.39
      Long Aluminum Slider Long Aluminum Slider
      FMA35-S24 3.35
      Finish boring slider Finish boring slider
      FMA34-S24 1.02
      Finish boring head Finish boring head
      A34-CBH5395 0.55
      Balancing weight Balancing weight
      FMA34-S24-PZK 1.56
      Feature
      70–90% of material is made from Aluminum.
      With internal cooling supply.
      Balanced: G6.3; 1,000 rpm.
      derek CBH-M Boring Tool For Pin Turning
      CBH-M Boring Tool 22CBH-M Boring Tool 23
      Specification Range Фd Bridge frame Side-lock screw Boring head Balance weight Insert holder Insert Boring range Weight
      DCK6-CBH24-34-M 24-34 DCK6-2452-42 114 M120Z200-30P-D CBH32-60 DCK3-CBH CBH3-3 TPGH0802 134-144 1.60
      DCK6-CBH33-43-M 33-43 CBH32-60 DCK3-CBH CBH3-2 TPGH0802 125-135 1.60
      DCK6-CBH42-52M 42-52 CBH32-60 DCK3-CBH CBH3-1 TPGH0802 116-126 1.60
      DCK6-CBH52-62-M 52-62 DCK6-5280-42 142 M120Z200-30P-D CBH32-60 DCK3-CBH CBH3-3 TPGH0802 162-172 1.80
      DCK6-CBH61-71-M 61-71 CBH32-60 DCK3-CBH CBH3-2 TPGH0802 153-163 1.80
      DCK6-CBH70-80-M 70-80 CBH32-60 DCK3-CBH CBH3-1 TPGH0802 144-154 1.80
      DCK6-CBH80-90-M 80-90 DCK6-80108-42 170 M120Z200-30P-D CBH32-60 DCK3-CBH CBH3-3 TPGH0802 190-200 2.00
      DCK6-CBH89-99-M 89-99 CBH32-60 DCK3-CBH CBH3-2 TPGH0802 181-191 2.00
      DCK6-CBH98-108-M 98-108 CBH32-60 DCK3-CBH CBH3-1 TPGH0802 172-182 2.00
      ✔ Suitable: DEREK、KYOCERA Or SUMITOMO Insert
      Notice:
      1. Boring head have only one cartridge, without insert, please order them separately.
      2. Anti-clockwise spindle rotation required.
      Feature
      CBH boring head loaded opposite direction can process boring machining.
      Machining range Ф116–Ф200.
      derek CBH-L Boring Tool For Pin Turning (Large Diameter)
      CBH-L Boring Tool 24CBH-L Boring Tool 25
      Specification Range Фd Flange adapter Extension bridge L Balance weight Boring head Boring range Boring depth Finish head Weight
      DCK6-CBH13-115-L 13-115 DCK6-FL200 DST200 180 DCK4-CB200 CBH41-74 (CBH4-1) TCMT 1102 With (For choice) TPGH 1103 108-192 75, Φ<180 DCK4-CBH 8.70
      DCK6-CBH112-215-L 112-215 DCK6-FL200 DST300 280 DCK4-CB200 108-292 75, Φ<280 DCK4-CBH 10.02
      DCK6-CBH212-315-L 212-315 DCK6-FL200 DST400 380 DCK4-CB200 108-392 75, Φ<380 DCK4-CBH 11.92
      DCK6-CBH312-415-L 312-415 DCK6-FL200 DST500 480 DCK4-CB200 108-492 75, Φ<480 DCK4-CBH 13.82
      DCK6-CBH412-515-L 412-515 DCK6-FL200 DST600 580 DCK4-CB200 108-592 75, Φ<580 DCK4-CBH 15.72
      DCK6-CBH512-615-L 512-615 DCK6-FL200 DST700 680 DCK4-CB200 108-692 75, Φ<680 DCK4-CBH 17.70
      DCK6-CBH612-715-L 612-715 DCK6-FL200 DST800 780 DCK4-CB200 108-792 75, Φ<780 DCK4-CBH 19.60
      ✔ Suitable: DEREK、KYOCERA Or SUMITOMO Insert
      Notice:
      1. Boring head with one cartridge, without insert, please order it separately.
      2. Anti-clockwise spindle rotation required.
      derek CBH Boring Head Operation Manual
      Installation Of Cartridge and Inserts
      Installation Of Cartridge and Inserts
      • ① Clean the mounting surface of insert holder and boring head; Mount the insert holder while fitting into the convex on the head; Make sure there is no gap and misalignment between insert holder and boring head; Fasten the locking screw properly. For back boring, please mount the insert holder turned over 180°. See Fig. A
      • ② Use compressed air to clean the surface of inserts and insert pocket on cartridge. Ensure they are free of any dust or oil; Position the indexable insert on the insert pocket and tighten the clamping screw securely. See Fig. B
      Structure
      Structure
      • ① DCK Connection
      • ② Boring Head
      • ③ Graduated Dial
      • ④ Locking Screw
      • ⑤ Grease Hole
      • ⑥ Clamping Screw
      • ⑦ Cartridge
      Usage of Graduated Dial
      Usage of Graduated Dial
      • ① Unlock locking screw (figure 4)
      • ② Clockwise adjust the dial (figure 3): when the dial scale moves one division, 0.01mm is added to the boring hole diameter; when the matched line of dial and vernier scale moves one smaller division (as per vernier), 0.001mm is added to the boring hole diameter.
      • ③ Lock the locking screw (figure 4).
      Operating Instructions
      Operating Instructions
      • Before operation, check that the indexable insert is suitable and the locking screw is fastened securely.
      • ① Loosen the locking screw in anti-clockwise direction.
      • ② Adjust the graduated dial clockwise to increase working diameter. Adjust anti-clockwise to reduce working diameter.
      • ③ Please adjust the graduated dial in the same direction as the beginning of rotating when finishing.
      • ④ Tighten the locking screw clockwise properly.
      Notices Of The User
      Notices Of The User
      • ① Use boring head within suggested range.
      • ② Rotating the graduated dial without loosening the locking screw would cause damage to the internal moving parts of the boring head.
      • ③ Check the following two possible troubles when the rotation meets big resistance or refuses to move: (a) If the locking screw is loosened. (b) If the boring diameter exceeds the boring range of boring head.
      • ④ Machine spindle shall be run in anticlockwise direction when back boring is adopted.
      • ⑤ Inject grease until it overflows from the circumference of the graduated dial. In addition to lubrication, it helps remove infiltrated coolant and impurities. Please adjust the graduated dial regularly to avoid grease becoming hardened. Do not overhaul the boring head without instructions from DEREK.
      Support Frequently Asked Questions
      • Q What is the adjusting precision of DEREK CBH Micro Boring Tools?
        The CBH Micro Boring Tools offer an adjusting rate of 0.01mm per graduation on the dial scale. By using the vernier scale, the adjusting precision can reach as fine as 0.001mm, ensuring extremely accurate bore diameter control for high-precision machining applications.
      • Q Can CBH boring tools perform back-boring operations?
        Yes. CBH boring tools support back-boring operations. The cartridge can be mounted in the opposite direction (rotated 180°) to enable back boring. Anti-clockwise spindle rotation is required during back-boring. Use the formula C > (D + d) / 2 to verify feasibility before operation.
      • Q What insert types are compatible with DEREK CBH boring tools?
        DEREK CBH boring tools are compatible with TCMT1102 and TPGH series inserts. The tools are also compatible with inserts from KYOCERA and SUMITOMO. Cartridges offer two insert options — TC type and TP type — for different machining requirements.
      • Q What is the boring range covered by the DCK modular boring tool system?
        The DCK modular boring tool system covers a wide range. Small diameter CBH tools (using CK connector) cover Ø20–203mm. Large diameter FM-CBH tools (using bridge structure) extend the range from Ø148mm up to Ø1275mm. External boring tools CBH-M and CBH-L cover Ø13–715mm.
      • Q Why are FM-CBH large diameter boring tools made with aluminum?
        FM-CBH large diameter tools use 70–90% aluminum in their bridge structure. This reduces tool weight significantly while maintaining rigid structural integrity. The lightweight design reduces machine spindle load, improves cutting stability, and enhances overall machining efficiency at high rotational speeds. All tools are balanced to G6.3 at 1,000 rpm.
      • Q How should the CBH boring head be maintained and lubricated?
        Inject grease into the grease hole until it overflows from the circumference of the graduated dial. This lubricates the internal mechanism and helps flush out coolant and impurities. Regularly adjust the graduated dial to prevent grease from hardening. Do not attempt to overhaul the boring head without guidance from DEREK technical support.

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