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Thread Rolling Dies

Thread rolling dies is a tool for rolling threads by means of metal plastic deformation on the wire rolling machine. The high-quality wire rolling die is required to be made of Cr12MoV material, with hardness above HRC62, wear resistance, and long service life.

Thread rolling tools including flat dies, planetary dies, thread rolling cylindrical dies and annular thrufeed threading dies adopt advanced alloy tool steel and professional vacuum heat treatment, so uniform hardness, extremely high stability, professional and rigorous manufacturing, and quality control, regardless of teeth, and the teeth are extremely high.

We offer good customization services, special specifications, such as screw thread, screw pitch, thread number, etc., can be customized according to customer’s needs.

Annular thrufeed threading dies

Annular Thru-feed Threading Dies are used for rolling threads that exceed the max die width with the thread form ground on the die in straight rings, not helix.

  • Made of selected tool steel Cr12MoV, high hardness and wear-resistance for a long lifespan.
  • Uniform accurate threads for meeting precision threading demands.
  • Smooth surface to produce a better thread.
  • Easy installation and reduced setup time for higher production rates.
  • Supplying dies for ALONSO, CAMPORESI, ESCOFIER, GROB, IZPE, MAGNAGHI, MAPRE, ORT, FRITZ WERNER, SENY, TESKER, TSUGAMI, YIEH CHEN, etc. thread rolling dies.
  • Regrinding service is available.
Annular thru-feed threading dies specifications

M/C MODEL øA MAX B øC RECOMMENDED WIDTH NO. PER SET
ALONSO P10 170mm 12mm 54mm 90mm max. 2
ALONSO P15 170mm 12mm 54mm 130mm max. 2
ALONSO P25 195mm 12.7mm 69.85mm 220mm max. 2
ALONSO P25 AUTO 195mm 12.7mm 69.85mm 220mm max. 2
CAMPORESI RB7 120mm 8mm 28mm 60mm max. 2
ESCOFIER H12 170mm 12mm 54mm 130mm max. 2
ESCOFIER H24 220mm 12.7mm 69.85mm 160mm max. 2
ESCOFIER H30 220mm 12.7mm 69.85mm 260mm max. 2
ESCOFIER H80 300mm 32mm 120mm 300mm max. 2
GROB RM28X 80mm 6mm 28mm 70mm max. 2
GROB RM54A 150mm 12mm 54mm 160mm max. 2
IZPE RSC300 160mm 12mm 54mm 120mm max. 2
IZPE RSC300H 220mm 12mm 54mm 200mm max. 2
MAGNAGHI T12 175mm 12mm 54mm 200 mm 2
MAGNAGHI T30 215mm 12.7mm 69.85mm 280mm 2
MAPRE 2B 110mm 12mm 54mm 130mm max. 2
MAPRE 3B 190.5mm 12.7mm 69.85mm 150mm max. 2
ORT ITALIA 18B 185mm 12mm 54mm 150mm max. 2
ORT ITALIA 3RP15 175mm 12mm 40mm 80mm max. 2
ORT ITALIA 3RP42 215mm 16mm 69.85mm 150mm max. 2
ORT ITALIA 3RP8 80mm 6mm 28mm 150mm max. 2
PEE WEE P5 120mm 10mm 40mm 38mm max. 2
PEE WEE P12 152.4mm 12mm 54mm 130mm max. 2
PEE WEE P20 195mm 12mm 54mm 160mm max. 2
SENY D25 125mm 12mm 40mm 50mm max. 2
SENY D30 100mm 12mm 40mm 50mm max. 2
SENY D44H 120mm 12mm 40mm 80mm max. 2
SENY D40H 120mm 12mm 40mm 70mm max. 2
SENY D50H 170mm 12mm 54mm 100mm max. 2
SENY D75B 170mm 12mm 54mm 160mm max. 2
G07 THOMMEN 95mm 6mm 28mm 55mm max. 2
G15 THOMMEN 150mm 12mm 54mm 130mm max. 2
G17 THOMMEN 148mm 12mm 54mm 130mm max. 3
TESKER 200 127mm Various Various 82.6mm max. 2
TESKER 215 152.4mm Various Various 114.3mm max. 2
TESKER 320 203.2mm Various Various 139.7mm max. 2
TESKER 635 254mm Various Various 203.2mm max. 2
TSUGAMI T15 180mm 12mm 54mm 150mm max. 2
TSUGAMI T25D 210mm 18mm 85mm 300mm max. 2
YIEH CHEN 30A 80mm 25.4mm 6.35mm 40mm max. 3
YIEH CHEN 60A/AP 140mm 40mm 12mm 50mm max. 3
YIEH CHEN 420 150mm 54mm 12mm 80mm max. 2
YIEH CHEN 530 180mm 54mm 12mm 150mm max. 2
Problems Reasons Solutions
Slivers or flakes Dies not in match Resynchronize rolls
Center line of rolls not parallel with center line of work Check slide for alignment
Deep cross-nicking on dies Check slide gib and springs. Tighten adapter if used.
Feed rate too slow, causing rolls to slip on work Increase rate of penetration
Rough finish on blank Regrind tooling
Machine and dies too large and clumsy for the job Use correct rolls for job
Overfilling dies Reduce blank diameter
Material not adaptable to cold-working Change material. Check with material supplier.
Seamy stock Not suitable for roll threading
Poor finish on thread Corresponding poor finish on the dies Replace rolls
Dies that are worn out or broken Replace rolls
Dies not in match Resynchronize rolls
Chips, from other operations, between rolls and work. Make sure a good jet of clean oil is reaching rolling position.
Material accumulated in threads on roll Replace rolls if material cannot be removed.
Material not ductile enough for coldworking Change material
Split thread Seamy stock Change stock
Dies too short for the job Replace rolls
Drunken Threads Rolls not in match Resynchronize rolls
Center line of rolls not parallel with center line of work Check slide for alignment
Inaccurate rolls Replace rolls
Work bending during rolling. Support part during rolling operation or slow down penetration rate if possible

Planetary thread rolling dies

  • Heat-treated tool steel with superior performance
  • Accurate and precise machined as drawing
  • Easy installation
  • Long lifespan
  • Supplying dies for Prutton, Ingramatic, Omega, Enkotec, Zeus, Ruja, Sakamura, Ticho, Salvi, Sima. etc thread rolling machines
  • We offer regrind service for worn dies
Machine Builders Rolled thread / Nominal dia. Rolled thread / Thread Length Rolling speed (pcs./min.) Feed system Dies width(T) Segment dies / Outside dia. Segment dies / Center angle Roller dies / Internal dia Roller dies / Key-way width
Sakamura Kikai SSR30 3～10 ～80 300～400 Cam ～80 240 120° 127 13
SSR50 12～16 ～80 150～200 Cam ～80 340 120° 127 13
SSR50D 12～16 ～80 150～200 Cam ～80 340 120° 152.4 15
SSR70 16～22 ～75 100～150 Cam ～75 420 120° 228.6 18
FR220 ～6 ～35 350max Cam ～35 165 120° 65 13
FR325 6～8 ～90 200～300 Cam ～90 190 120° 85 13
FR325S 6～8 ～90 200～300 Cam ～90 200 120° 85 13
FR330 8～10 ～90 200～300 Cam ～90 220 120° 100 13
Teijin Seiki TR6 3～8 ～50 ～1200 CW※ ～50 250 120° 127 13
Dainichi Tekko RR200 3～6 ～50 200～600 Cam ～52.25 241.5 (100mm) 140 -10
Kamiyama Tekko KRT600 3～6 ～50 600 Cam ～50 241.4 90° 10 12.7
KRT450 8～12 ～80 450 Cam ～80 360 120° 180 15
WATERBURY No.1 3～6 ～57.2 Cam ～57.2 241.3 120° 127 12.7
No.10 3～6 ～57.2 Cam ～57.2 241.3 90° 127 12.7
INGRAMTIC GR1 1.7～4 ～22 Cam ～22 120 90° 40 10
GR2 4～8 ～50 Cam ～50 241.3 90° 127 12.8
OMEGA RR4 2～4 ～20 Cam ～20 120 90° 40 10
RR6 2.6～6 ～40 Cam ～40 241.3 120° 127 13
SACMA RU2 4～12 ～69.9 Cam ～69.9 280 120° 127 12.7

Resource

What is thread rolling dies?2021-10-20T08:50:57+00:00

Thread rolling dies is a special tool for processing taps and bolts. It is the most commonly used thread making tool for processing screws and bolts in the standard fastener industry. The processing principle mainly adopts cold extrusion. Cold extrusion has the advantages of high production efficiency, low processing cost, high thread precision and strength, good surface quality and so on.

Thread rolling dies are generally formed by cold rolling. They are not processed after heat treatment. During operation, the tooth shall bear severe impact load and extrusion stress. After heat treatment, the hardness within 3 to 5mm below the tooth root is 58 to 61hrc, the quenched martensite is less than grade 3, and there is no decarburization on the tooth surface.

Thread rolling dies should have high hardness, wear resistance, sufficient strength, certain impact force and strong fatigue resistance. It is made of 9SiCr and Cr12MoV steel. The hardness of the working part is 59 ~ 62Hrc. If it is > 62Hrc, it is easy to collapse and if it is < 59HRC, it is easy to wear; Quenched martensite < grade 3; The working surface shall be free of decarburization and low hardness; The surface of the wire take-up plate shall be free of cracks, nicks, rust, grinding burns and other defects affecting the service performance.

The materials selected for thread rolling dies shall have the following properties:

  • Good hardenability, high matrix hardness and good wear resistance;
  • Good dimensional stability;
  • Good impact toughness and appropriate strength;
  • Good machinability and hot machinability.

Therefore, the common materials suitable for manufacturing are 9SiCr, Cr12 or Cr12MoV, but most factories use 9SiCr at present.

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