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    China Suppliers Factory HSK-A-DSC BT-DSC Side Cutter Holders and Oil-feed Holders for Precision Machining
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    HSK-A-DSC-Side-Cutter-Holder1@4x.jpg
    CSO-Reducing-Sleeve1@4x.jpg
    BT-SLO-Oil-feed-Holder-1@4x.jpg
    BT-DSC-Side-Cutter-Holder-1@4x.jpg
    SK-DSC-Side-Cutter-Holder-1@4x.jpg
    SK-SLO-Oil-feed-Holder-1@4x.jpg

    China Suppliers Factory HSK-A-DSC BT-DSC Side Cutter Holders and Oil-feed Holders for Precision Machining

    Discover our premium range of cutting tools and holders, perfect for enhancing your machining processes. Our offerings include the HSK-A-DSC Side Cutter Holder, BT-DSC Side Cutter Holder, and the BT-SLO Oil-feed Holder, each designed for precision and reliability. Additionally, our CSO Reducing Sleeve and PB Oil-feed Holder Positioning Block ensure optimal compatibility and performance in your operations. Explore the SK-DSC Side Cutter Holder and SK-SLO Oil-feed Holder, along with the CSO Oil-feed Holder Reducing Sleeve for effective oil-feed management. As a leading supplier and factory in China, we are committed to providing high-quality products that meet your industrial needs. Trust us to be your go-to source for efficient and durable machining solutions.

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      HSK-A-DSC Side Cutter Holder

      HSK-A-DSC Side Cutter Holder1@4xHSK-A-DSC Side Cutter Holder2@4x
      Specification L1 L2 L3 D1 D2 K H T Weight
      HSK63A-DSC22-90 90 22 30.00 22 34 6 24.3 M20*1.5P 1.45
      HSK63A-DSC22-135 135 22 30.00 22 34 6 24.3 M20*1.5P 1.77
      HSK63A-DSC27-90 90 28 30.00 27 41 7 30 M24*1.5P 1.87
      HSK63A-DSC27-135 135 28 30.00 27 41 7 30 M24*1.5P 2.33
      HSK63A-DSC32-90 90 32 30.00 32 47 8 35.5 M30*1.5P 2.32
      HSK63A-DSC32-135 135 32 30.00 32 47 8 35.5 M30*1.5P 2.93
      HSK100A-DSC22-90 90 22 30.00 22 34 6 24.3 M20*1.5P 2.78
      HSK100A-DSC22-135 135 22 30.00 22 34 6 24.3 M20*1.5P 3.10
      HSK100A-DSC27-90 90 28 30.00 27 41 7 30 M24*1.5P 3.19
      HSK100A-DSC27-135 135 28 30.00 27 41 7 30 M24*1.5P 3.66
      HSK100A-DSC32-90 90 32 30.00 32 47 8 35.5 M30*1.5P 3.65
      HSK100A-DSC32-135 135 32 30.00 32 47 8 35.5 M30*1.5P 4.26
      HSK100A-DSC40-90 90 40 30.00 40 55 10 43.7 M36*2.0P 4.40
      HSK100A-DSC32-135 135 40 30.00 40 55 10 43.7 M36*2.0P 5.24

      BT-DSC Side Cutter Holder

      BT-DSC Side Cutter Holder-1@4xBT-DSC Side Cutter Holder-2@4x
      Specification L1 L2 L3 D1 D2 K H T Weight
      BT40-DSC22-75 75 22 30.00 22 34 6 24.3 M20*1.5P 1.69
      BT40-DSC22-120 120 22 30.00 22 34 6 24.3 M20*1.5P 2.01
      BT40-DSC27-75 75 28 30.00 27 41 7 30 M24*1.5P 2.06
      BT40-DSC27-120 120 28 30.00 27 41 7 30 M24*1.5P 2.52
      BT40-DSC32-90 90 32 30.00 32 47 8 35.5 M30*1.5P 2.68
      BT50-DSC22-90 90 22 30.00 22 34 6 24.3 M20*1.5P 4.40
      BT50-DSC22-135 135 22 30.00 22 34 6 24.3 M20*1.5P 4.72
      BT50-DSC27-90 90 28 30.00 27 41 7 30 M24*1.5P 4.78
      BT50-DSC27-135 135 28 30.00 27 41 7 30 M24*1.5P 5.25
      BT50-DSC32-90 90 32 30.00 32 47 8 35.5 M30*1.5P 5.21
      BT50-DSC32-135 135 32 30.00 32 47 8 35.5 M30*1.5P 5.82
      BT50-DSC40-90 90 40 30.00 40 55 10 43.7 M36*2.0P 5.93
      BT50-DSC40-135 135 40 30.00 40 55 10 43.7 M36*2.0P 6.76

      BT-SLO Oil-feed Holder

      BT-SLO Oil-feed Holder-1@4xBT-SLO Oil-feed Holder-2@4x
      Specification D d L1 L2 L3 L B Side-lock screw Wrench Weight
      BT40-SLO32-150 72 32 50 15 15 150 60/65 M120U200 L06D 5.33/5.35
      BT40-SLO40-150 72 40 50 18 19 150 60/65 M140U160 L06D 5.04/5.07
      BT50-SLO32-160 72 32 50 15 15 160 80/82 M120U200 L06D 8.63/8.65
      BT50-SLO40-160 72 40 50 18 19 160 80/82 M140U160 L06D 8.33/8.35
      ⚠️ Notice: 1. Wrench is included;    2. Before order please check the distance B.

      CSO Reducing Sleeve

      CSO Reducing Sleeve1@4xCSO Reducing Sleeve2@4x
      Specification D d d1 L1 L2 L3 L Weight
      CSO32-16 53 32 16 10 15 15 65 0.40
      CSO32-20 53 32 20 10 15 15 65 0.35
      CSO32-25 53 32 25 10 15 15 65 0.26
      CSO40-16 63 40 16 10 18 19 75 0.74
      CSO40-20 63 40 20 10 18 19 75 0.68
      CSO40-25 63 40 25 10 18 19 75 0.59
      CSO40-32 63 40 32 10 18 19 75 0.41

      PB Oil-feed Holder Positioning Block

      Specification Weight
      BT40-PB30-35 0.53
      BT50-PB30-35 0.46
      PB Oil-feed Holder Positioning Block@4x
      ⚠️ Notice: Using oil-feed holder, positioning block is required.
      Make sure to apply of the right method when assembling this block to different machines.

      SK-DSC Side Cutter Holder

      SK-DSC Side Cutter Holder-1@4xSK-DSC Side Cutter Holder-2@4x
      Specification L1 L2 L3 D1 D2 K H T Weight
      SK40-DSC22-75 75 22 30.00 22 34 6 24.3 M20*1.5P 1.58
      SK40-DSC22-120 120 22 30.00 22 34 6 24.3 M20*1.5P 1.90
      SK40-DSC27-75 75 28 30.00 27 41 7 30 M24*1.5P 1.97
      SK40-DSC27-120 120 28 30.00 27 41 7 30 M24*1.5P 2.44
      SK40-DSC32-90 90 32 30.00 32 47 8 35.5 M30*1.5P 2.61
      SK50-DSC22-90 90 22 30.00 22 34 6 24.3 M20*1.5P 3.52
      SK50-DSC27-90 90 28 30.00 27 41 7 30 M24*1.5P 3.96
      SK50-DSC27-135 135 28 30.00 27 41 7 30 M24*1.5P 4.43
      SK50-DSC32-90 90 32 30.00 32 47 8 35.5 M30*1.5P 4.45
      SK50-DSC32-135 135 32 30.00 32 47 8 35.5 M30*1.5P 5.06
      SK50-DSC40-90 90 40 30.00 40 55 10 43.7 M36*2.0P 5.26
      SK50-DSC40-135 135 40 30.00 40 55 10 43.7 M36*2.0P 6.10

      SK-SLO Oil-feed Holder

      BT-SLO Oil-feed Holder-1@4xBT-SLO Oil-feed Holder-2@4x
      Specification D d L1 L2 L3 L B Side-lock screw Wrench Weight
      SK40-SLO32-160 72 32 50 15 15 160 60/65 M120U200 L06D 5.35
      SK40-SLO40-160 72 40 50 18 19 160 60/65 M140U160 L06D 5.04
      SK50-SLO32-160 72 32 50 15 15 160 80/82 M120U200 L06D 8.64
      SK50-SLO40-160 72 40 50 18 19 160 80/82 M140U160 L06D 8.35
      ⚠️ Notice: 1. Wrench is included;    2. Before order please check the distance B.

      CSO Oil-feed Holder Reducing Sleeve

      CSO Reducing Sleeve1@4xCSO Reducing Sleeve2@4x
      Specification D d d1 L1 L2 L3 L Weight
      CSO32-16 53 32 16 10 15 15 65 0.40
      CSO32-20 53 32 20 10 15 15 65 0.35
      CSO32-25 53 32 25 10 15 15 65 0.26
      CSO40-16 63 40 16 10 18 19 75 0.74
      CSO40-20 63 40 20 10 18 19 75 0.68
      CSO40-25 63 40 25 10 18 19 75 0.59
      CSO40-32 63 40 32 10 18 19 75 0.41
      ? Frequently Asked Questions
      Q What is the difference between HSK-A-DSC, BT-DSC, and SK-DSC side cutter holders?
      The main difference lies in the shank interface type. HSK-A-DSC holders use the HSK-A hollow taper shank interface (HSK63A or HSK100A), which provides high rigidity and is suitable for high-speed machining centers. BT-DSC holders use the BT (MAS-BT) taper shank (BT40 or BT50), widely adopted in general CNC machining centers. SK-DSC holders use the SK (ISO/DIN) taper shank (SK40 or SK50). All three types share the same DSC side cutter connection interface and dimensional parameters (L2, D1, D2, K, H, T), making it easy to select the right holder based on your machine spindle type.
      Q What does the model number of a DSC side cutter holder mean? For example, BT40-DSC22-75?
      The model number is structured as follows: BT40 indicates the shank type and size (BT taper, size 40); DSC22 indicates the DSC side cutter interface with a cutter bore diameter of 22mm (D1=22mm); 75 indicates the overall length L1=75mm. This naming convention applies consistently across HSK-A-DSC, BT-DSC, and SK-DSC series, making it straightforward to identify the correct specification for your application.
      Q Is a positioning block (PB) required when using the BT-SLO or SK-SLO oil-feed holder?
      Yes. When using an oil-feed holder (SLO series), the positioning block (PB) is required to ensure correct orientation and oil channel alignment. The PB Oil-feed Holder Positioning Block (BT40-PB30-35 or BT50-PB30-35) must be properly assembled to your machine spindle. Please make sure to apply the correct assembly method according to your specific machine model, as the mounting method may vary between different machines.
      Q What should I check before ordering a BT-SLO or SK-SLO oil-feed holder?
      Before placing an order for an SLO oil-feed holder, you must verify the distance B on your machine spindle. The distance B refers to the clearance dimension between the spindle face and the machine structure, which determines whether the oil-feed holder can be installed correctly. The available B values are listed in the specification table (e.g., 60/65 for BT40 and SK40 series, 80/82 for BT50 and SK50 series). Please measure your machine's B distance and select the matching specification accordingly. A wrench is included with each SLO holder.
      Q What is the CSO Reducing Sleeve used for, and how do I select the right size?
      The CSO Reducing Sleeve is used to adapt the bore diameter of an SLO oil-feed holder to accept smaller-diameter cutting tools. For example, if your SLO holder has a bore of d=32mm but you need to mount a tool with a shank of 16mm, 20mm, or 25mm, you would select the corresponding CSO32-16, CSO32-20, or CSO32-25 sleeve. Similarly, for a 40mm bore holder, choose from CSO40-16, CSO40-20, CSO40-25, or CSO40-32. Select based on the outer diameter d matching your holder bore and the inner diameter d1 matching your tool shank diameter.
      Q What materials and quality standards are these tool holders manufactured to?
      These tool holders are manufactured from high-quality alloy steel with precision CNC machining, heat treatment, and surface grinding to meet strict dimensional tolerances. The HSK-A interface conforms to DIN 69893 standards, the BT interface conforms to MAS-BT (JIS B 6339) standards, and the SK interface conforms to ISO 7388 / DIN 69871 standards. All products undergo strict quality inspection including runout accuracy, balance grade, and dimensional verification to ensure reliable performance in high-speed and high-precision machining applications.

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