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Die M48x3 left HSS - Die fine threaded
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  • Die M48x3 left HSS - Die fine threaded
  • Die M48x3 left HSS - Die fine threaded - nr. 1
Varel

Die M48X3 LH HSS DIN 22 568 Cztool

Varel Varel
13954
€142.42 tax inc.

Net price: €115.79

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Description

Technical data for the M48x3 left-hand die

Technical data
Thread size D1 M48x3 left-hand
Thread Pitch P 3 mm
Outside Diameter D2 90 mm
Thickness H1 36 mm
Number of Chip Holes 7
Required Shaft Diameter 47.76 mm
Metric fine thread die drawing

Die M48x3 left-hand HSS DIN 22 568 – left-hand thread with increased pitch for medium to large sizes

The M48x3 left-hand die is a specialized round tool made of high-speed steel (HSS) with a hardness of 64 HRC, combining a medium to large diameter of 48 mm with a left-hand thread with an increased pitch of 3 mm. A left-hand thread is cut in the opposite direction to a standard thread, preventing self-loosening in medium and large rotating machinery, while the increased pitch further speeds up threading. Compliance with DIN 22 568 and a tolerance of 6g ensure proper fit with 6H left-hand nuts. This tool is intended for specialized workshops serving the machinery industry, rotating equipment, and assemblies requiring left-hand threads with increased cutting efficiency at medium to large sizes.

Key advantages of the M48x3 left-hand die with increased pitch

  • Left-hand thread with an increased pitch of 3 mm – the left-hand direction prevents unscrewing, while the larger pitch increases cutting efficiency by approximately 30-40 percent compared with the standard pitch of 2 mm in left-hand threaded assemblies
  • Diameter of 48 mm for medium-to-large assemblies – a size used in industrial gearboxes, large grinding machines, and machinery requiring a left-hand thread at substantial dimensions
  • Standard pitch of 3 mm for faster threading – the larger pitch enables faster cutting while maintaining sufficient mechanical strength in medium to large left-hand threaded assemblies
  • HSS steel hardness of 64 HRC – ensures long tool life when cutting left-hand threads in structural steels up to 800 MPa at medium to large diameters with a larger pitch
  • Solid round construction – one-piece construction provides the maximum rigidity required for left-hand threading at medium to large diameters with increased pitch

The M48x3 left-hand die is a solution for specialized workshops servicing medium and large rotating machinery, industrial gearboxes, large grinding machines, and equipment where the direction of rotation requires a left-hand thread and increased pitch provides higher production efficiency. Due to this combination (left-hand + increased pitch + medium to large diameter), threading requires a highly skilled operator, rigid die stocks with handles at least 500 mm long, and intensive lubrication because of the greater amount of material removed at a pitch of 3 mm.

Frequently asked questions

Prepare a rod (diameter 47.4-47.5 mm) with a 45° chamfer. Clamp it as securely as possible to eliminate vibration. Turn the die to the left (counterclockwise), making two turns forward, then back it off half a turn to the right. Due to the medium to large diameter and increased pitch, a die stock with handles at least 500 mm long or a powered drive is recommended for comfort and safety.

Use threading oils or cooling and lubricating emulsions, applying them very generously before starting and every 2-3 turns. A left-hand thread with an increased pitch of 3 mm at a diameter of 48 mm requires intensive lubrication – the larger pitch means more material removal and higher cutting forces, 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. At a medium to large diameter with increased pitch, problems are particularly dangerous – the larger pitch generates more chips. Clean the flutes very thoroughly with compressed air and check the rod diameter. Resume with plenty of fresh lubricant and more frequent backing off (every 1.5 turn), under the supervision of an operator experienced in left-hand threads with increased pitch.

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Die M48X3 LH HSS DIN 22 568 Cztool

Die M48X3 LH HSS DIN 22 568 Cztool

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
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