PFERD 47957 – Unitized Mounted Point, Ball Shape, 3/4″ x 1/4, 3SF (MW), 1/4″ Shank (10pk)

PFERD 47957 – Unitized Mounted Point, Ball Shape, 3/4″ x 1/4, 3SF (MW), 1/4″ Shank

Multiple heavily compressed, non-woven layers, which are bonded together by a special grain/resin system. The SiC version is ideal for demanding tasks on hard or sensitive materials. The ball shape KU is often used for contour grinding and backside deburring.

Applications

Cleaning

Deburring

Step-by-step fine grinding

Roughening

Structuring (matt finishing, brush matting and satin finishing)

Surface work

Features

Cost-effective due to high abrasive performance and durability.

Produces very good surface quality.

Can be profiled as desired, enabling optimal adjustment to the contour.

Materials

Aluminum	Fibre-reinforced thermosetting plastics (GRP, CRP)	Thermoplastics
Brass	Hardened, heat-treated steels over 370 HV (38 HRC)	Titanium
Bronze	Nickel-based alloys (e.g. Inconell and Hastelloy)	Titanium alloys
Cast steel	Stainless steel (INOX)	Zinc
Cobalt-based alloys	Steel materials with a hardness> 54 HRC
Copper	Steels up to 370 HV (< 38 HRC)

Recommendations

For the best performance, use with a recommended peripheral speed of 2,000-4,000 SFPM. This provides an ideal compromise between stock removal rate, surface quality, thermal load on the workpiece and flap wheel/cross buff wear.

Considerably reduce peripheral speed for work on materials with poor heat-conducting properties, e.g. titanium and stainless steel.

Specifications

Product Type	Fine grinding and finishing products
Drive Type	Flexible shaft drive, Straight grinder
External Diameter	0.75″
Shank Diameter	0.25″
Width	3/4″
Abrasive Material	Silicon carbide SiC
Grit Size	F (fine)
Shape	Ball
Max RPM	33400 RPM
Weight	0.022 lb