Straight Grinder
Straight Grinder - Roll Start
![](https://nkstools.com/wp-content/uploads/2022/10/NK664R.jpg)
NK664R
![](https://nkstools.com/wp-content/uploads/2022/10/NK665R.jpg)
NK665R
![](https://nkstools.com/wp-content/uploads/2022/10/NK666R.jpg)
NK666R
![](https://nkstools.com/wp-content/uploads/2022/10/NK667R.jpg)
NK667R
![](https://nkstools.com/wp-content/uploads/2022/10/NK668R.jpg)
NK668R
![](https://nkstools.com/wp-content/uploads/2022/10/NK669R.jpg)
NK669R
![](https://nkstools.com/wp-content/uploads/2022/10/NK670R-300x289.jpg)
NK670R
Straight Grinder
![](https://nkstools.com/wp-content/uploads/2022/10/NK671R-300x290.jpg)
NK671R
![](https://nkstools.com/wp-content/uploads/2022/10/NK672R-300x291.jpg)
NK672R
Model | Wheel Size | Wheel Size | Spindle Thread | Free Speed | Overall Length | Overall Length | Weight | Weight | Air Consumption | Air Inlet | Air Hose |
mm | in | rpm | mm | in | kg | lb. | m3/min | in | in | ||
NK664R | 45x13x- | 1 25/32x1/2x- | W3/8-16 | 12,000 | 316 | 12-7/16 | 1.2 | 2.6 | 0.50 | 3/8 | 1/2 |
NK665R | 65x13x9.53 | 2 1/2x1/2x3/8 | W3/8-16 | 14,600 | 317 | 12 31/64 | 1.5 | 3.3 | 0.60 | 3/8 | 1/2 |
NK666R | 100x19x12.7 | 4x3/4x1/2 | W1/2-12 | 9,500 | 391 | 15 25/64 | 2.2 | 4.8 | 0.80 | 3/8 | 1/2 |
NK667R | 125x19x12.7 | 5x3/4x1/2 | W1/2-12 | 7,600 | 405 | 15 60/64 | 2.9 | 6.4 | 1.0 | 3/8 | 1/2 |
NK668R | 150x25x15.8 | 6x1x5/8 | 5/8-11UNF | 6,300 | 434 | 17 5/64 | 3.5 | 7.7 | 1.2 | 3/8 | 1/2 |
NK669R | 205x25x15.8 | 8x1x5/8 | 5/8-11UNF | 4,600 | 472 | 18 37/64 | 5.4 | 11.8 | 1.6 | 1/2 | 1/2 |
NK670R | 65x13x9.53 | 2 1/2x1/2x3/8 | W3/8 - 16 | 12,000 | 522 | 20 35/64 | 1.9 | 4.2 | 0.6 | 3/8 | 3/8 |
NK671R | 75x19x9.53 | 3x3/4x3/8 | W3/8 - 16 | 12,000 | 585 | 23 1/32 | 2.7 | 5.9 | 0.8 | 3/8 | 1/2 |
NK672R | 100x19x12.7 | 4x3/4x1/2 | W1/2 - 12 | 9,000 | 953 | 37 33/64 | 5.3 | 11.7 | 1.0 | 3/8 | 1/2 |
Straight Grinder - Lever Start
![](https://nkstools.com/wp-content/uploads/2022/10/NK664L.jpg)
NK664L
![](https://nkstools.com/wp-content/uploads/2022/10/NK665L.jpg)
NK665L
![](https://nkstools.com/wp-content/uploads/2022/10/NK666L.jpg)
NK666L
![](https://nkstools.com/wp-content/uploads/2022/10/NK667L.jpg)
NK667L
![](https://nkstools.com/wp-content/uploads/2022/10/NK668L.jpg)
NK668L
![](https://nkstools.com/wp-content/uploads/2022/10/NK669L.jpg)
NK669L
![](https://nkstools.com/wp-content/uploads/2022/10/NK670L-300x287.jpg)
NK670L
![](https://nkstools.com/wp-content/uploads/2022/10/NK671L-300x288.jpg)
NK671L
![](https://nkstools.com/wp-content/uploads/2022/10/NK672L-300x286.jpg)
NK672L
Model | Wheel Size | Wheel Size | Spindle Thread | Free Speed | Overall Length | Overall Length | Weight | Weight | Air Consumption | Air Inlet | Air Hose |
mm | in | rpm | mm | in | kg | lb. | m3/min | in | in | ||
NK664L | 45x13x- | 1 25/32x1/2x- | 3/8-24UNF | 14,600 | 367 | 14 29/64 | 1.5 | 3.3 | 0.60 | 3/8 | 3/8 |
NK665L | 65x13x9.53 | 2 1/2x1/2x3/8 | W3/8-16 | 14,600 | 342 | 13 15/32 | 1.7 | 3.7 | 0.60 | 3/8 | 3/8 |
NK666L | 100x19x12.7 | 4x3/4x1/2 | W1/2-12 | 9,500 | 414 | 16 19/64 | 2.3 | 5.1 | 0.80 | 3/8 | 1/2 |
NK667L | 125x19x12.7 | 5x3/4x1/2 | W1/2-12 | 7,600 | 506 | 19 59/64 | 3.0 | 6.7 | 1.0 | 3/8 | 1/2 |
NK668L | 150x25x15.8 | 6x1x5/8 | 5/8-11UNF | 6,300 | 531 | 20 29/32 | 3.4 | 7.5 | 1.2 | 3/8 | 1/2 |
NK669L | 205x25x15.8 | 8x1x5/8 | 5/8-11UNF | 4,600 | 556 | 21 57/64 | 5.5 | 12.1 | 1.6 | 1/2 | 1/2 |
NK670L | 65x13x9.53 | 2 1/2x1/2x3/8 | W3/8 - 16 | 12,000 | 547 | 20 17/32 | 1.9 | 4.2 | 0.6 | 3/8 | 3/8` |
NK671L | 75x19x9.53 | 3x3/4x3/8 | W3/8 - 16 | 12,000 | 616 | 24 7/32 | 2.6 | 5.7 | 0.8 | 3/8 | 1/2 |
NK672L | 100x19x12.7 | 4x3/4x1/2 | W1/2 - 12 | 9,000 | 1050 | 41 11/32 | 5.4 | 11.9 | 1.0 | 3/8 | 1/2 |