BIG Hydraulic Tool Holder for Automatic Lathes — Bore Machining Application Case Sharing - BIG DAISHOWA
BIG Hydraulic Tool Holders for CNC Lathes - Hole Machining Case Study
● Machining Process
Hole Machining: Drilling → Rough Reaming → Finish Reaming → Roller Burnishing
● Machining Difficulty
φ9H7 tolerance grade requires high reaming accuracy. Good consistency in batch production is essential to ensure the final process yield.
● Machining Method
Replaced spring collet holders from other brands with BIG DAISHOWA hydraulic tool holders.

● Machining Example
Part Name: Fuel Injector Seat
Part Material: A specific grade of stainless steel
Machine Tool: A brand Swiss-type lathe
Cooling Method: Machine tool external coolant
Operation Type: Finish Reaming
Tool: SL25-HDC12-65
Cutting Parameters:
Cutting Speed (Vc): 55 m/min
Feed Rate (f): 0.08 mm/rev
● Machining Result

● Product Advantages
Simple Operation
Only one wrench is needed to quickly install/remove and adjust tools even in tight spaces, improving production efficiency.
Only one wrench is needed to quickly install/remove and adjust tools even in tight spaces, improving production efficiency.
High Clamping Precision
Tool runout accuracy within 3μm at 4xD; repeat clamping accuracy within ±1μm.
Tool runout accuracy within 3μm at 4xD; repeat clamping accuracy within ±1μm.
Mature Hydraulic Technology
Utilizes BIG's proven hydraulic tool holder technology. Fully sealed construction is waterproof, dustproof, and leak-proof. Through-tool coolant is standard.
Utilizes BIG's proven hydraulic tool holder technology. Fully sealed construction is waterproof, dustproof, and leak-proof. Through-tool coolant is standard.
Designed for CNC Automatic Lathes
The form factor is specifically designed for CNC automatic lathes (Swiss-type lathes), compatible with various machine models.
The form factor is specifically designed for CNC automatic lathes (Swiss-type lathes), compatible with various machine models.
● Product Video
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