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Die M70X2 LH HSS DIN 22 568 Cztool
0000011418
Thread size: M70x266 sizes of this die
M4x0,5M6x0,8M7x0,5M9x1M10x0,75M10x1M10x1,25M11x1M12x0,5M12x1M12x1,25M13x1,25M14x1M14x1,25M14x1,5M15x1M15x1,5M16x0,75M16x1M16x1,25M16x1,5M18x0,5M18x1M18x1,25M18x1,5M18x2M20x1M20x1,5M20x2M22x1,5M22x2M24x1M24x1,5M24x2M25x1M25x1,5M26x1,5M27x1,5M27x2M28x1M28x1,5M28x2M30x1,5M30x2M30x2,5M30x3M32x1,5M32x2M36x1,5M38x1,5M40x1,5M42x1,5M48x1,5M48x2M48x3M50x1,5M52x1,5M56x1,5M70x1,5M70x2M72x1,5M72x4M75x1,5M75x2M76x1,5M82x1,5
€313.97 tax inc.
Net price: €255.26
Description
Technical data for the M70x2 left-hand die
| Technical data | |
|---|---|
| Thread size D1 | M70x2 left-hand |
| Thread Pitch P | 2 mm |
| Outside Diameter D2 | 140 mm |
| Thickness H1 | 25 mm |
| Required Shaft Diameter | 69.8 mm |
Die M70x2 left-hand HSS DIN 22 568 – left-hand thread for large structures
The M70x2 left-hand die is a specialized round tool made of high-speed steel (HSS) with a hardness of 64 HRC, combining a large diameter of 70 mm with a left-hand thread with a standard pitch of 2 mm. A left-hand thread is cut in the opposite direction to a standard thread, preventing self-unscrewing in large rotating machines where components rotate clockwise during operation. Compliance with DIN 22 568 and a tolerance of 6g ensure proper mating with left-hand 6H nuts. This tool is intended for specialist workshops servicing the heavy machinery industry, rotating equipment, and structures requiring left-hand threads at very large dimensions.
Key advantages of the M70x2 left-hand die
- Left-hand thread at a diameter of 70 mm – the left-hand direction prevents unscrewing in large rotating machines, gearboxes, and equipment where a standard right-hand thread could loosen during operation
- Diameter of 70 mm for large machinery – a size found in the largest industrial gearboxes, large grinding machines, and machines requiring a left-hand thread at very large dimensions
- Standard pitch of 2 mm – a conventional pitch that provides adequate mechanical strength while allowing thread cutting despite the large diameter and left-hand direction
- HSS steel hardness of 64 HRC – provides long service life when cutting large-diameter left-hand threads in structural steels up to 800 MPa
- Solid round construction – one-piece construction provides the maximum rigidity required for large-diameter left-hand threading
The M70x2 left-hand die is a solution for specialist workshops servicing large rotating machines, large industrial gearboxes, large grinding machines, and equipment where the direction of rotation requires a left-hand thread at very large dimensions. Due to these characteristics (left-hand + large diameter), threading requires a highly skilled operator, rigid die stocks with long handles of at least 600 mm, and preferably a mechanical drive for safety.
Frequently asked questions
Prepare the rod (diameter 69.5-69.6 mm) with a 45° chamfer. Clamp it as securely as possible to eliminate all vibration. Turn the die counterclockwise (to the left), making two forward turns, then back off half a turn clockwise. Due to the large diameter, a mechanical drive or two-person operation with handles at least 600 mm long is recommended.
Use threading oils or cooling and lubricating emulsions applied very generously before starting and every 2-3 turns. Large-diameter left-hand threading requires intensive lubrication – at a diameter of 70 mm, high cutting forces are generated, requiring a continuous supply of lubricant to reduce resistance and temperature.
Remember that backing off a left-hand thread requires clockwise rotation. Immediately turn clockwise (to the right) to withdraw the die safely. Problems at large diameters are particularly dangerous – clean the flutes very thoroughly and check the rod diameter. Resume with generous fresh lubrication and more frequent backing off (every 1.5 turn) under the supervision of an experienced operator.
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Shipping
All orders are delivered by courier company GLS. For orders exceeding 369 PLN gross shipping is FREE
| Courier GLS | Przelew24 / Prepayment | 14,76 zł gross | Delivery time 1 working day |
| Courier GLS | Cash on delivery | 17,26 zł gross | Lead time 1 working day |
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