Ручные и измерительные инструменты Hoffmann Group 2026 - страница 454

GBP 57 A Form 1 Ceramic bonded external cylindrical grinding wheels High performance external cylindrical grinding wheels in ceramic bonding. The grinding wheel structure incorporates the optimum match of grit volume and bonding volume; bonding strength and manufacturing process are characterised by: ■ High cutting effectiveness and reduced grinding times with low wear. ■ Low thermal loading, cool cutting. ■ Long cycles between dressing operations mean reduced downtime. 59 4225–4565 – Aluminium oxide for general purpose use. 59 4588–4595 – Sintered aluminium oxide for longer working life and better metal removal rate. Particularly suitable for high alloy steels / HSS. Application: ■ For general use in external cylindrical grinding (straight/ oblique longitudinal grinding, recess grinding). ■ For use on all grinding machines generally used for tool and die making, and machine tool building (e.g. Kellenberger, Studer, Schaudt, Tschudin, etc.) ns ns ■ Cooling with emulsion is necessary, good lubrication on long-chipping materials is absolutely nw nw necessary. Specification: Longitudinal grinding 59 4125 59 4225–4565 – 89A 802J5 AV217 process 59 4588–4595 – SD83A80II7PVK8F Note: Suitable also for surface grinding. Material Working speed Workpiece Workpiece speed Infeed Lateral pass vs = vc (m/s) ­dimensions (rpm) ae (mm) (longitudinal recommended maximum (mm) Recess grinding Longitudinal ­grinding) ae grinding ae (mm/min) (mm/pass) 59 low-alloy and high-alloy steels, hardened 25 – 40 50 ⌀ 50 ⌀ 100 120 60 Initial pass Intermed. pass Finishing pass 2.5 1 0.1 0.02 – 0.05 0.01 – 0.005 0.002 30 – 40 % Spark erosion 5 turns 1 – 2 passes ​ 59 4225–​59 4565 ● ● ● ● ○ ○ ● ● 59 4588–​59 4595 ● ● ● ○ ● Type A80 Shape 59 4225 350×32×127 eShop 1 53Y 53Y 53Y Precision external cylindri- 59 4345 cal grinding wheel D×T×H (mm) 400×40×127 eShop 1 59 4565 500×60×203.2 eShop 1 Type A80 Shape 59 4588 400×30×127 eShop 1 53Y 53Y 53Y 53Y 53Y 53Y 59 4590 400×40×127 eShop 1 59 4592 Precision external cylindri- 400×60×127 cal grinding wheel eShop 1 59 4593 D×T×H (mm) 500×40×203.2 eShop 1 59 4594 500×50×203.2 eShop 1 59 4595 500×60×203.2 eShop 1 59 4225 – 59 4565 59 4588 – 59 4595 A Form 5 Ceramic bonded internal cylindrical grinding wheels High performance special electro-bonded Aluminium Oxide internal cylindrical grinding wheels D P ns in ceramic bonding. F Application: General use for internal cylindrical grinding, e.g. for grinding through holes, dowel T nw holes. H Specification: 97A802I5V112 Steel universal. Material Working speed Workpiece Workpiece speed Oscillation (internal Infeed ae vs = vc (m/s) dimensions (rpm) longitudinal grinding) (mm) recommended maximum (mm) (passes/min) ⌀ 25 300 Initial pass 0.02 – 0.05 low-alloy and Intermed. pass 0.01 – 0.005 high-alloy 50 – 80 80 60 – 100 % ⌀ 50 150 Finishing pass 0.001 – 0.002 steels, hardened Spark erosion 5 passes ​ 59 5023–​59 5051 ○ ○ ● ○ ○ ● ​ ​ Shape P mm F mm 59 5023 20×20×6 eShop 25 5 13 7 53Y 53Y 53Y 53Y 53Y 59 5024 25×25×10 Precision internal cylindri- eShop 10 5 16 10 59 5034 cal grinding wheel D×T×H (mm) 32×32×10 eShop 10 5 18 16 59 5043 40×40×13 eShop 10 5 20 20 59 5051 50×40×16 eShop 10 5 30 13 454