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    China BSA 45° Boring Holder with Square Boring Bit - Reliable Suppliers and Factory Direct Service
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    China BSA 45° Boring Holder with Square Boring Bit - Reliable Suppliers and Factory Direct Service

    Introducing our specialized cutting tools designed for precision boring in blind holes. Our products feature the versatility of 4-corner welded cutters or indexable cutting tools, making them ideal for a variety of applications. As a leading factory in China, we pride ourselves on delivering high-quality tools that meet the rigorous standards of our customers. Please note that the square boring bit must be ordered separately. Partner with us, your trusted suppliers in the industry, for all your cutting tool needs.

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      Product Detail

      derek

      Inserts Holder SFC For Roughing

      BSA BSB TBS CBS SB Rough Boring1BSA BSB TBS CBS SB Rough Boring2
      Specification d1 d2 L1 L Boring range W T1 T2 Weight
      BT40-BSA25-120 20 22 35 90 25-38 8 M060U060-D - - 1.19
      BT40-BSA30-150 24 26 40 120 30-42 8 M060U080-D M060U100-D - 1.40
      BT40-BSA38-165 30 33 50 135 38-52 10 M080U100-D M080U120-D - 1.70
      BT40-BSA42-165 34 37 50 135 42-56 10 M080U100-D M080U120-D - 1.91
      BT40-BSA42-210 34 37 50 180 42-56 10 M080U100-D M080U120-D - 2.24
      BT40-BSA50-165 40 44 65 135 50-65 13 M080U100-D M080U120-D M080U160-D 2.24
      BT40-BSA62-180 50 56 80 150 62-90 16 M100U120-D M100U160-D M100U200-D 3.20
      BT40-BSA72-180 60 - 95 150 72-110 19 M100U120-D M100U200-D M100U250-D 3.93
      BT40-BSA90-180 75 - - 150 90-125 19 M120U200-D M120U300-D - 5.13
      BT50-BSA25-135 20 22 35 92 25-38 8 M060U060-D - - 3.90
      BT50-BSA30-165 24 26 40 122 30-42 8 M060U080-D M060U100-D - 4.07
      BT50-BSA38-180 30 33 50 137 38-52 10 M080U100-D M080U120-D - 4.39
      BT50-BSA42-210 34 37 60 167 42-56 10 M080U100-D M080U120-D - 4.86
      BT50-BSA50-180 40 44 65 137 50-65 13 M080U100-D M080U120-D M080U160-D 5.00
      BT50-BSA50-240 40 44 65 197 50-65 13 M080U100-D M080U120-D M080U160-D 5.59
      BT50-BSA62-195 50 56 80 152 62-90 16 M100U120-D M100U160-D M100U200-D 5.93
      BT50-BSA62-270 50 56 80 227 62-90 16 M100U120-D M100U160-D M100U200-D 6.63
      BT50-BSA72-195 60 66 95 152 72-110 19 M100U120-D M100U200-D M100U250-D 6.18
      BT50-BSA72-285 60 66 95 242 72-110 19 M100U120-D M100U200-D M100U250-D 8.92
      BT50-BSA90-210 75 80 110 267 90-125 19 M120U200-D M120U300-D - 8.88
      BT50-BSA90-300 75 80 110 257 90-125 19 M120U200-D M120U300-D - 12.14
      BT50-BSA105-195 90 - - 152 105-160 25 M120U200-D M120U300-D - 10.60
      BT50-BSA105-285 90 94 130 242 105-160 25 M120U200-D M120U300-D - 14.00
      derek

      BSB 90° Boring Holder With Square Boring Bit

      BSA BSB TBS CBS SB Rough Boring3BSA BSB TBS CBS SB Rough Boring4
      Specification d1 d2 L1 L Boring range W T1 T2 Weight
      BT40-BSB25-120 20 22 35 90 25-52 8 M060U060-D M060U120-D 1.21
      BT40-BSB38-150 30 33 55 120 38-70 10 M080U100-D M080U120-D 1.73
      BT40-BSB50-165 40 44 70 135 50-90 13 M100U120-D M100U120-D 2.45
      BT40-BSB62-180 50 56 80 150 62-115 16 M100U120-D M100U160-D 3.56
      BT40-BSB90-180 75 - - 150 90-150 19 M120U120-D M120U250-D 6.30
      BT50-BSB25-135 20 22 35 92 25-52 8 M060U060-D M060U120-D 3.95
      BT50-BSB38-180 30 33 55 137 38-70 10 M080U100-D M080U120-D 4.51
      BT50-BSB50-180 40 44 70 137 50-90 13 M100U120-D M100U120-D 5.21
      BT50-BSB50-240 40 44 70 197 50-90 13 M100U120-D M100U120-D 5.82
      BT50-BSB62-195 50 56 80 152 62-115 16 M100U120-D M100U160-D 6.33
      BT50-BSB62-270 50 56 80 227 62-115 16 M100U120-D M100U160-D 7.61
      BT50-BSB72-195 60 66 95 152 72-135 19 M120U120-D M120U200-D 7.40
      BT50-BSB72-285 60 66 95 242 72-135 19 M120U120-D M120U200-D 9.37
      BT50-BSB90-210 75 80 115 167 90-150 19 M120U120-D M120U250-D 9.97
      BT50-BSB90-300 75 80 115 257 90-150 19 M120U120-D M120U250-D 13.24
      BT50-BSB105-195 90 - - 152 105-190 25 M120U120-D M120U300-D 11.66
      BT50-BSB105-285 90 94 135 242 105-190 25 M120U120-D M120U300-D 16.29
      ⚠️ Notice: Square boring bit shall be ordered separately.
      Feature
      • For work piece with a rough surface.
      • Special for through holes.
      derek

      TBS Square Boring Bar

      T90° For BSB Boring Holder
      BSA BSB TBS CBS SB Rough Boring5BSA BSB TBS CBS SB Rough Boring6
      Specification D L Boring range Insert Insert screw Wrench Weight
      TBS910-36-L/R 10 36 38-50 TPGH0902 M025W060 Q08 0.05
      TBS910-45-L/R 10 45 50-70 TPGH0902 M025W060 Q08 0.05
      TBS913-48-L/R 13 48 50-70 TPGH1103 M030W070 Q08 0.08
      TBS913-65-L/R 13 65 70-90 TPGH1103 M030W070 Q08 0.10
      TBS916-60-L/R 16 60 62-90 TPGH1103 M030W070 Q08 0.15
      TBS916-80-L/R 16 80 90-115 TPGH1103 M030W070 Q08 0.20
      TBS919-70-L/R 19 70 72-105 TPGH1603 M035T085 Q15 0.22
      TBS919-85-L/R 19 85 90-115 TPGH1603 M035T085 Q15 0.25
      TBS919-90-L/R 19 90 105-135 TPGH1603 M035T085 Q15 0.27
      TBS919-105-L/R 19 105 115-150 TPGH1603 M035T085 Q15 0.30
      TBS925-100-L/R 25 100 105-140 TPGH1603 M035T085 Q15 0.50
      TBS925-135-L/R 25 130 140-190 TPGH1603 M035T085 Q15 0.65
      T45° For BSA Boring Holder
      BSA BSB TBS CBS SB Rough Boring7BSA BSB TBS CBS SB Rough Boring8
      Specification D L Boring range Insert Insert screw Wrench Weight
      TBS410-45 10 45 38-52 TPGH0902 M025W060 Q08 0.05
      TBS410-50 10 50 42-56 TPGH0902 M025W060 Q08 0.05
      TBS413-60 13 60 50-65 TPGH1103 M030W070 Q08 0.1
      TBS416-75 16 75 62-90 TPGH1103 M030W070 Q08 0.15
      TBS419-90 19 90 72-110 TPGH1603 M035T085 Q15 0.25
      TBS419-115 19 115 90-125 TPGH1603 M035T085 Q15 0.35
      TBS425-130 25 130 105-160 TPGH1603 M035T085 Q15 0.65
      ✅ Suitable: DEREK、KYOCERA Or SUMITOMO Insert
      Feature
      • For roughing and medium-heavy cutting.
      derek

      CBS Square Boring Bar

      C90° For BSB Boring Holder
      BSA BSB TBS CBS SB Rough Boring9BSA BSB TBS CBS SB Rough Boring10
      Specification D L Boring range Insert Insert screw Wrench Weight
      CBS908-23-L/R 8 23 25-38 CCMT0602 M025W060 Q08 0.05
      CBS908-30-L/R 8 30 38-52 CCMT0602 M025W060 Q08 0.06
      CBS910-36-L/R 10 36 38-50 CCMT0602 M025W060 Q08 0.07
      CBS910-45-L/R 10 45 50-70 CCMT0602 M025W060 Q08 0.08
      CBS913-48-L/R 13 48 50-70 CCMT09T3 M040S100 Q15 0.10
      CBS913-65-L/R 13 65 70-90 CCMT09T3 M040S100 Q15 0.12
      CBS916-60-L/R 16 60 62-90 CCMT09T3 M040S100 Q15 0.15
      CBS916-80-L/R 16 80 90-115 CCMT09T3 M040S100 Q15 0.17
      CBS919-70-L/R 19 70 72-105 CCMT1204 M050Y110-1 Q20 0.20
      CBS919-85-L/R 19 85 90-115 CCMT1204 M050Y110-1 Q20 0.28
      CBS919-90-L/R 19 90 105-135 CCMT1204 M050Y110-1 Q20 0.25
      CBS919-105-L/R 19 105 115-150 CCMT1204 M050Y110-1 Q20 0.30
      CBS925-100-L/R 25 100 105-140 CCMT1204 M050Y110-1 Q20 0.50
      CBS925-135-L/R 25 135 140-190 CCMT1204 M050Y110-1 Q20 0.65
      ✅ Suitable: DEREK、MITSUBISHI Or HITACHI Insert
      C45° For BSA Boring Holder
      BSA BSB TBS CBS SB Rough Boring11BSA BSB TBS CBS SB Rough Boring12
      Specification D L Boring range Insert Insert screw Wrench Weight
      CBS408-30 8 30 25-38 CCMT0602 M025W060 Q08 0.05
      CBS408-35 8 35 30-42 CCMT0602 M025W060 Q08 0.06
      CBS410-45 10 45 38-52 CCMT0602 M025W060 Q08 0.07
      CBS410-50 10 50 42-56 CCMT0602 M025W060 Q08 0.08
      CBS413-60 13 60 50-65 CCMT09T3 M040S100 Q15 0.10
      CBS416-75 16 75 62-90 CCMT09T3 M040S100 Q15 0.20
      CBS419-90 19 90 72-110 CCMT1204 M050Y110-1 Q20 0.25
      CBS419-115 19 115 90-125 CCMT1204 M050Y110-1 Q20 0.30
      CBS425-130 25 130 105-160 CCMT1204 M050Y110-1 Q20 0.60
      ✅ Suitable: DEREK、MITSUBISHI Or HITACHI Insert
      Feature
      • For heavy cutting.
      derek

      SB Fixed Rough Boring Bar

      BSA BSB TBS CBS SB Rough Boring13BSA BSB TBS CBS SB Rough Boring14
      Specification Teeth D d L1 L Insert Insert screw Wrench Weight
      SB-C16-TB16-110 2 15.8 16 60 110 CCMT060204 M025W060 Q08 0.15
      SB-C16-TB16-135 2 15.8 16 85 135 CCMT060204 M025W060 Q08 0.18
      SB-C16-TB17-110 2 16.8 16 40 110 CCMT060204 M025W060 Q08 0.16
      SB-C16-TB17-135 2 16.8 16 40 135 CCMT060204 M025W060 Q08 0.20
      SB-C16-TB18-110 2 17.8 16 40 110 CCMT060204 M025W060 Q08 0.16
      SB-C16-TB18-135 2 17.8 16 40 135 CCMT060204 M025W060 Q08 0.20
      SB-C16-TB19-110 2 18.8 16 40 110 CCMT060204 M025W060 Q08 0.16
      SB-C16-TB19-160 2 18.8 16 40 160 CCMT060204 M025W060 Q08 0.24
      SB-C16-TB20-110 2 19.8 16 40 110 CCMT060204 M025W060 Q08 0.17
      SB-C16-TB20-160 2 19.8 16 40 160 CCMT060204 M025W060 Q08 0.25
      SB-C20-TB21-120 2 20.8 20 40 120 CCMT060204 M025W060 Q08 0.27
      SB-C20-TB21-160 2 20.8 20 40 160 CCMT060204 M025W060 Q08 0.37
      SB-C20-TB22-120 2 21.8 20 40 120 CCMT060204 M025W060 Q08 0.28
      SB-C20-TB22-160 2 21.8 20 40 160 CCMT060204 M025W060 Q08 0.38
      SB-C20-TB23-120 2 22.8 20 40 120 CCMT060204 M025W060 Q08 0.28
      SB-C20-TB23-180 2 22.8 20 40 180 CCMT060204 M025W060 Q08 0.43
      SB-C20-TB24-120 2 23.8 20 40 120 CCMT060204 M025W060 Q08 0.29
      SB-C20-TB24-180 2 23.8 20 40 180 CCMT060204 M025W060 Q08 0.44
      SB-C20-TB25-120 2 24.8 20 40 120 CCMT060204 M025W060 Q08 0.29
      SB-C20-TB25-160 2 24.8 20 40 160 CCMT060204 M025W060 Q08 0.39
      SB-C20-TB25-190 2 24.8 20 40 190 CCMT060204 M025W060 Q08 0.47
      SB-C20-TB26-120 2 25.8 20 40 120 CCMT060204 M025W060 Q08 0.30
      SB-C20-TB26-190 2 25.8 20 40 190 CCMT060204 M025W060 Q08 0.47
      SB-C20-TB27-120 2 26.8 20 40 120 CCMT060204 M025W060 Q08 0.30
      SB-C20-TB27-190 2 26.8 20 40 190 CCMT060204 M025W060 Q08 0.48
      SB-C20-TB28-120 2 27.8 20 40 120 CCMT09T308 M040S100-1 Q15 0.28
      SB-C20-TB28-190 2 27.8 20 40 190 CCMT09T308 M040S100-1 Q15 0.46
      SB-C25-TB30-160 2 29.8 25 50 160 CCMT09T308 M040S100-1 Q15 0.58
      SB-C25-TB30-190 2 29.8 25 50 190 CCMT09T308 M040S100-1 Q15 0.70
      SB-C25-TB32-160 2 31.8 25 50 160 CCMT09T308 M040S100-1 Q15 0.60
      SB-C25-TB32-210 2 31.8 25 50 210 CCMT09T308 M040S100-1 Q15 0.79
      SB-C25-TB35-160 2 34.8 25 50 160 CCMT09T308 M040S100-1 Q15 0.61
      SB-C25-TB35-230 2 34.8 25 50 230 CCMT09T308 M040S100-1 Q15 0.88
      SB-C25-TB37-160 2 36.8 25 50 160 CCMT09T308 M040S100-1 Q15 0.63
      SB-C25-TB37-250 2 36.8 25 50 250 CCMT09T308 M040S100-1 Q15 0.97
      SB-C25-TB40-160 2 39.8 25 50 160 CCMT09T308 M040S100-1 Q15 0.68
      SB-C32-TB40-250 2 39.8 32 50 250 CCMT09T308 M040S100-1 Q15 1.03
      SB-C32-TB42-200 2 41.8 32 50 200 CCMT09T308 M040S100-1 Q15 1.27
      SB-C32-TB42-250 2 41.8 32 50 250 CCMT09T308 M040S100-1 Q15 1.59
      SB-C32-TB45-200 2 44.8 32 50 200 CCMT09T308 M040S100-1 Q15 1.31
      SB-C32-TB45-310 2 44.8 32 50 310 CCMT09T308 M040S100-1 Q15 2.01
      SB-C32-TB47-200 2 46.8 32 50 200 CCMT09T308 M040S100-1 Q15 1.34
      SB-C32-TB47-260 2 46.8 32 50 260 CCMT09T308 M040S100-1 Q15 1.72
      SB-C32-TB50-200 2 49.8 32 50 200 CCMT09T308 M040S100-1 Q15 1.38
      SB-C32-TB50-310 2 49.8 32 50 310 CCMT09T308 M040S100-1 Q15 2.07
      ✅ Suitable: DEREK Insert
      Frequently Asked Questions
      Q What is the difference between BSA and BSB boring holders?
      The BSA is an inserts holder SFC designed for roughing at a 45° angle, compatible with TBS and CBS boring bars at 45°. The BSB is a 90° boring holder with a square boring bit, designed specifically for through holes and rough surface workpieces, and is compatible with TBS and CBS boring bars at 90°.
      Q Does the BSB boring holder include the square boring bit?
      No. The square boring bit must be ordered separately. Please refer to the TBS or CBS boring bar series to select the appropriate boring bit that matches your BSB holder specification.
      Q What inserts are compatible with the TBS Square Boring Bar?
      The TBS Square Boring Bar is compatible with DEREK, KYOCERA, and SUMITOMO inserts. The specific insert model varies by bar size — for example, TPGH0902 for smaller diameters and TPGH1603 for larger diameters.
      Q What applications are the CBS Square Boring Bars suitable for?
      The CBS Square Boring Bars are designed for heavy cutting applications. They are compatible with DEREK, MITSUBISHI, and HITACHI inserts, and are available in both C90° (for BSB boring holders) and C45° (for BSA boring holders) configurations.
      Q What is the SB Fixed Rough Boring Bar used for, and what inserts does it use?
      The SB Fixed Rough Boring Bar is a fixed-diameter roughing bar suitable exclusively for DEREK inserts. It uses CCMT060204 inserts for smaller shank sizes (C16, C20) and CCMT09T308 inserts for larger shank sizes (C25, C32), covering boring diameters from approximately 15.8mm up to 49.8mm.
      Q How do I select the correct boring holder for BT40 or BT50 spindle tapers?
      Both BSA and BSB series are available in BT40 and BT50 shank configurations. BT40 holders are generally lighter in weight and suitable for standard machining centers, while BT50 holders are heavier and designed for larger, more powerful machines requiring greater rigidity. Select based on your machine's spindle taper and the required boring range.

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