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Fluids play a minor role in rotary broaching. Any type of water or oil based fluid is acceptable. The chip is a flowing type and the amount of heat generated is very minimal.
When internal rotary broaching in blind holes, fluids should be applied on the broaching tool tip prior to contacting workpiece and not inside of workpiece pilot hole. Trapped fluid sometimes is unable to escape causing inability to broach to full depth.
For external rotary broaching, fluids may be applied prior to or continuously on workpiece diameter.
Lubrication of Holder
Lubricate every 2 hours of continued usage. After lubrication, hand rotate spindle to relieve pressure caused by greasing. Slater Tools offers and recommends Mobiltemp SHC 32©. This is a clay thickened, synthetic, dark red grease. Do not use grease containing graphite. (Mobiltemp SHC 32 is available from Slater Tools)
Replacement parts for Slater's Rotary Broach Holders are available from stock. Orders placed before 4:30 p.m. EST will be shipped that same day. Later orders will be shipped the following day.
Upon receipt of your Slater Rotary Broach Holder, an evaluation and price quote will be submitted for your consideration before repairs are made. Once we receive your authorization, your holder will be repaired and shipped back to you within 48 hours.
Slater Tools offers broach resharpening for both internal and external rotary broaches. Resharpened broaches can be ready within 48 hours of receipt. Along with your contact information, please mark "Attn: Resharp" on your paperwork and indicate the low limit of the tolerance for internal broaches and the high limit for externals.