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China CBH Micro Finish Boring Tools - Precision Suppliers and Factory for Hole Making Solutions
DCK Modular Boring Tools
High Precision, High Strength and Easy Operation — the Best Style of Connection
- 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.
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 is 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 |
 TPGH0802 |
DCK1-CBH20-36 | CBH | 4-1 |
TCMT1102 (With) TPGH1103 (For choice) |
DCK4-CBH41-74 | CBH | 1-1 |
 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.
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.
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
- 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.
Product Display
Tool Setter Alignment
Machine the Machine Tool
The Surface of Workpiece After Machining
FM-CBH Large Diameter Boring Tool For Finishing
| 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 |  |
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 |  |
- | ||||
| BT-FMS | - | ||||||
| SK-FMS | - | ||||||
| BBT-FMS | - | ||||||
| CAT-FMS | - | ||||||
| Extension Aluminum bridge | FMS40-148 |  |
1.46 | ||||
| FMS40-198 | 1.99 | ||||||
| FMS40-248 | 2.47 | ||||||
| Finish boring Aluminum slider |  |
||||||
| FMA34-S17 | 0.29 | ||||||
| Finish boring head |  |
||||||
| A34-CBH5395 | 0.55 | ||||||
| Balancing Aluminum weight |  |
||||||
| FMA34-S17-PZK | 0.86 | ||||||
- 70–90% of material is made from Aluminum.
- With internal cooling supply.
- Balanced: G6.3; 1,000 rpm.
FM-CBH Large Diameter Boring Tool For Finishing
| 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 | |
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 |  |
- | ||||
| BT-FMX | - | ||||||
| SK-FMX | - | ||||||
| BBT-FMX | - | ||||||
| CAT-FMX | - | ||||||
| Extension Aluminum bridge | FMX40-298 |  |
5.33 | ||||
| FMX40-378 | 7.09 | ||||||
| FMX40-458 | 9.02 | ||||||
| Finish boring slider |  |
||||||
| FMA34-S24-PZK | 1.02 | ||||||
| Finish boring head |  |
||||||
| A34-CBH5395 | 0.55 | ||||||
| Balancing weight |  |
||||||
| FMA34-S24-PZK | 1.56 | ||||||
- 70–90% of material is made from Aluminum.
- With internal cooling supply.
- Balanced: G6.3; 1,000 rpm.
FM-CBH Large Diameter Boring Tool For Finishing
| 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 | |
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 | |
- | ||||
| BT-FMX | - | ||||||
| SK-FMX | - | ||||||
| BBT-FMX | - | ||||||
| CAT-FMX | - | ||||||
| Extension Aluminum bridge | FMX40-538 |  |
14.77 | ||||
| FMX40-778 | 25.96 | ||||||
| FMX40-1018 | 33.39 | ||||||
| Long Aluminum Slider |  |
||||||
| FMA35-S24 | 3.35 | ||||||
| Finish boring slider | |
||||||
| FMA34-S24 | 1.02 | ||||||
| Finish boring head | |
||||||
| A34-CBH5395 | 0.55 | ||||||
| Balancing weight | |
||||||
| FMA34-S24-PZK | 1.56 | ||||||
- 70–90% of material is made from Aluminum.
- With internal cooling supply.
- Balanced: G6.3; 1,000 rpm.
CBH-M Boring Tool For Pin Turning
| 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.
1. Boring head have only one cartridge, without insert, please order them separately.
2. Anti-clockwise spindle rotation required.
- CBH boring head loaded opposite direction can process boring machining.
- Machining range Ф116–Ф200.
CBH-L Boring Tool For Pin Turning (Large Diameter)
| 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.
1. Boring head with one cartridge, without insert, please order it separately.
2. Anti-clockwise spindle rotation required.
CBH Boring Head Operation Manual
1 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
2 Structure
- ① DCK Connection
- ② Boring Head
- ③ Graduated Dial
- ④ Locking Screw
- ⑤ Grease Hole
- ⑥ Clamping Screw
- ⑦ Cartridge
3 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).
4 Operating Instructions
- Before operation, check 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.
5 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: whether the locking screw is loosened; whether the boring diameter exceeds the boring range of boring head.
- ④ Machine spindle shall be run in anti-clockwise direction when back boring is adopted.
- ⑤ Inject grease until it overflows from the circumference of the graduated dial. This also helps remove infiltrated coolant and impurities. Adjust the graduated dial regularly to avoid grease hardening. Do not overhaul boring head without instructions from DEREK.
Frequently Asked Questions
Q
What is the adjusting precision of the CBH Micro Boring Tool?
The CBH Micro Boring Tool offers an adjusting rate of 0.01mm per division on the graduated dial. By using the vernier scale, the precision can be further refined to 0.001mm, making it suitable for high-accuracy finish boring operations.
Q
What is the advantage of the DCK modular connection system?
The DCK modular connection uses 30° taper screws to convert locking force into axial tension, ensuring the boring head and arbor are tightly attached. This design delivers high precision, high strength, and easy operation, while the modular structure allows flexible configuration with reducers, extensions, and chamfering rings for multifunctional work.
Q
Can the CBH boring head perform back boring operations?
Yes. The CBH cartridge can be mounted in the opposite direction (rotated 180°) to enable back boring. To verify feasibility, use the formula C > (D + d) / 2, where C is the minimum entry bore diameter, D is the back bore diameter, and d is the diameter of the boring head. Note that anti-clockwise spindle rotation is required for back boring.
Q
What insert brands are compatible with DEREK CBH boring tools?
DEREK CBH boring tools are compatible with inserts from DEREK, KYOCERA, and SUMITOMO. Standard insert models include TPGH0802, TCMT1102, and TPGH1103, depending on the specific tool series and cartridge type selected.
Q
What is the boring range covered by the CBH and FM-CBH series?
The CBH small-diameter series covers a boring range of 20–203mm using CK connectors. The FM-CBH large-diameter series (FMS and FMX types) extends the range from 148mm up to 1,275mm using an aluminum bridge structure for lightweight, rigid, and stable cutting performance.
Q
How should the 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 moving parts and helps expel infiltrated coolant and impurities. Regularly adjust the graduated dial to prevent grease from hardening. Do not disassemble or overhaul the boring head without official instructions from DEREK.