GBP 57 ​Grinding discs (quick-change system, internal thread) Optimum connection between the backing pad and grinding disc by the quick-clamping system (internal thread). Easy and quick disc replacement by hand, even after heavy use. Application: For efficient sanding down of small areas, even with varying contours in tool, mould and model making, machine, plant and container building. Reduced tool changing times save costs on multi-stage operations. Note: Other dimensions and grits available on request. ​ 55 3921/​3923 ○ ● ● ● ● ○ ● ○ ● ● ● ● ● 55 3925–​55 3955 ● ● ● ○ ○ ○ ● ● ● ● Grinding discs ceramic grit (CER) ​ CER Ceramic grit (CER) ideal for working on stainless steels and nickel alloys. High removal rate and cool cut. 55 3921 maximum speed Grit 36 60 80 120 min-1 55 3921 ⌀ 50.8 mm eShop eShop eShop eShop 100 25000 51E 51E Grinding disc (CER) 55 3923 ⌀ 76.2 mm eShop eShop eShop eShop 50 20000 55 Grinding discs regular aluminium oxide (A) ​ A Standard Aluminium Oxide (A) for general-purpose use. maximum speed 55 3925 Grit 36 60 80 120 min-1 55 3925 ⌀ 25.4 mm – eShop ■ eShop ■ eShop ■ 100 30000 52E 52E 52E Grinding disc 55 3950 (A) ⌀ 50.8 mm eShop eShop ■ eShop ■ eShop ■ 100 25000 55 3955 ⌀ 76.2 mm eShop eShop ■ eShop ■ eShop ■ 50 20000 A Fleece abrasive finishing disc (quick-change system, internal thread) High performance general-purpose nylon fleece. Application: For cleaning, degreasing, and matt finishing of metal surfaces. ​ 55 3965/​3966 ● ● ● ● ● ● ● ● ● ● ● ● ○ ● ● ○ ● maximum speed Grit equivalent 100 180 280 min-1 55 3965 51M 51M ⌀ 50.8 mm eShop eShop eShop 50 23000 Fleece abrasive finishing disc 55 3966 ⌀ 76.2 mm eShop eShop eShop 25 18000 Grit designation coarse medium fine ​ ​ 55 3965_100 Version A coarse A medium A very fine ​ ​ ​ Backing pads (quick-change system, internal thread) Rubber backing pad shank ⌀ 6 mm. To take grinding discs with the metal lock quick-clamping system. External ⌀ mm 25M 50M 50 75M 75 Rubber backing pad shank ⌀ 6 mm 55 3920 eShop ■ eShop ■ – eShop ■ – 52E medium hard Fit the grinding disc on to the Rubber backing pad shank ⌀ 6 mm backing pad − rotate a little − ready! 55 3927 – – eShop – eShop 52E hard Degree of hardness medium hard medium hard hard medium hard hard maximum speed min-1 40000 30000 30000 20000 20000 357