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    China BSA 45° Boring Holder with Square Boring Bit - Suppliers & Factory for Blind Holes and Indexable Cutting Tools
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    China BSA 45° Boring Holder with Square Boring Bit - Suppliers & Factory for Blind Holes and Indexable Cutting Tools

    Introducing our high-quality specialized boring tool designed for blind holes, a must-have for precision machining. This cutting-edge tool can be equipped with either a 4-corner welded cutter or indexable cutting tools, providing versatility and efficiency in your manufacturing processes. As a leading supplier in China, our factory ensures that all products meet strict quality standards to enhance your productivity. Please note that the square boring bit must be ordered separately for optimal performance. Choose us for reliable solutions tailored to meet your specific needs in the industry
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      Product Detail

      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
      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.
      Features
      • For work piece with a rough surface.
      • Special for through holes.
      TBS Square Boring Bar
      BSA BSB TBS CBS SB Rough Boring5BSA BSB TBS CBS SB Rough Boring6
      T90° For BSB Boring Holder
      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
      Features
      • For roughing and medium-heavy cutting.
      CBS Square Boring Bar
      BSA BSB TBS CBS SB Rough Boring9BSA BSB TBS CBS SB Rough Boring10
      C90° For BSB Boring Holder
      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
      Features
      • For heavy cutting.
      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
      What is the difference between BSA and BSB boring holders?
      The BSA is an inserts holder SFC designed for roughing with a 45° boring bar configuration (T45°/C45°), while the BSB is a 90° boring holder designed to work with square boring bits (T90°/C90°). BSA is suitable for general rough boring applications, whereas BSB is specially designed for through holes and workpieces with rough surfaces.
      Does the BSB boring holder include the square boring bit?
      No. The square boring bit (TBS or CBS series) must be ordered separately. Please select the appropriate TBS or CBS boring bar that matches your required boring range and holder size when placing your order.
      What inserts are compatible with TBS and CBS square boring bars?
      TBS square boring bars are compatible with DEREK, KYOCERA, or SUMITOMO inserts (TPGH series). CBS square boring bars are compatible with DEREK, MITSUBISHI, or HITACHI inserts (CCMT series). Please refer to the specification tables for the exact insert model required for each bar.
      What machining applications are these rough boring tools suitable for?
      These tools cover a wide range of rough boring applications: BSA/BSB holders are ideal for roughing and through-hole boring; TBS bars are designed for roughing and medium-heavy cutting; CBS bars are engineered for heavy cutting operations; SB fixed rough boring bars use DEREK inserts for stable, high-efficiency fixed-diameter rough boring.
      What is the boring range available across the BSA/BSB series?
      The BSA series covers boring ranges from 25 mm up to 160 mm, and the BSB series covers from 25 mm up to 190 mm. Both BT40 and BT50 shank options are available to suit different machine tool spindle interfaces.
      How do I select the correct SB Fixed Rough Boring Bar specification?
      Select the SB bar based on the shank diameter (d), the target boring diameter (D), and the required overall length (L). The SB series uses CCMT inserts and covers boring diameters from approximately 15.8 mm up to 49.8 mm. Multiple length options are available for each diameter to accommodate different workpiece depths.

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