Nitolex Tufflex Wheels

Manufacturer: Nitolex Corporation
Model: Tufflex

Features

Heat-resistant resin bond wheel
Tufflex wheels are high-performance wheels made of polyimide resin specially modified by us for super abrasive wheels to ensure excellent sharpness and durability at the same time.

Tufflex Tufflex wheel ultra-heat-resistant resin
1. Strength does not decrease when hot. In bending strength tests while heated, phenol resin fell to 30% of its room temperature strength when heated to 300°C, while Tufflex maintained 70% strength.
2. Tufflex has a higher heat deformation temperature than phenol resin.
3. Tufflex demonstrates high gripping strength of grain while grinding.

Features of Tufflex Bond

High performance grinding
Efficient grinding is realized by the excellent sharpness ensured by strong gripping strength of grain and the use of a heat-resistant bond that has a hither heat deformation point and does not degrade in strength when hot.
Excellent Profile Holding
Demonstrates particular efficiency in grinding requiring profile holding due to excelling durability.
Excellent wheel life
Greatly improved wheel life due to excellent durability.

Application CBN Wheels

Bonds

	Grinding conditions	Bonds
Wet	Tool steel medium/heavy grinding	PT8 series
	Die steel medium/heavy grinding	IPT series
	Tool/die steel heavy grinding	FPT · TPT series

Sintered Alloy
Nippei vertical spindle surface grinder – wet (water solution)
Wheel speed: 16 m/s Work speed: 35 m/min Depth of cut: 0.20 mm
Wheel: CBN 80 R 125 TPT87 6A2 40D x 35T x 5W x 3X

	Tufflex	Conv. Resin
Sharpness	Excellent	Normal
Surface roughness	0.3 µm Ra	0.35 µm Ra
Dressing interval	Not required	Not required
Wheel life	210% of conv.	—

Die steel
Okamoto surface grinder – wet (water solution) creep grinding
Wheel speed: 30 m/s Work speed: 120 mm/min Depth of cut: 1.5 mm
Wheel: CBN 140 M 125 PT82 1L1 200D x 10T x 31.75H x 3X

	Tufflex	Conv. Resin
Sharpness	Feed: 120 mm/min	60 mm/min
Dressing interval	5 pieces	2 pieces
Wheel life	200% of conv.	—

Applications Diamond wheel

Bonds

	Grinding conditions	Bonds
Wet	Carbide/ceramics medium/heavy grinding	PT8 series
	Cermet grinding	VPT・RPT series
	Carbide/steel simultaneous	JPT series
Dry	Carbide medium/heavy grinding	PTN series

Example Applications
Carbide
Makino Seiki wet (oil-based) drilling groove grinding
Work: φ6 mm (Grinding length 80 mm) Removal stock: 2.5 mm
Wheel speed: 25 m/s Work speed:70mm/min Depth of cut: 2.5 mm
Wheel: SDC 270 P 125 PT81 14FF1 150D x 10T x 31.75H x 6U x 5X

	Tufflex	Conv. Resin
Feed	70 mm/min	30 mm/min
Dressing interval	50 pieces	40 pieces
Wheel life	125% of conv.	—
Grinding efficiency	230% of conv.	—

Alumina
Washino surface grinder – wet (water solution)
Work: 30 mm x 10 mm x 25 mm Removal stock 0.1 mm
Wheel speed: 25 m/s Work speed: 10 m/min Depth of cut: 10 µm
Wheel: SDC 230 N 100 PT81 14A1R 200D x 25T x 31.75H x 3U x3X