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Home Thread Rolling Machine Thread Rolling Machine ZR 90°feeding Thread Length 100mm Moving Die Stationary Length 190/215/35mm

Thread Rolling Machine ZR 90°feeding Thread Length 100mm Moving Die Stationary Length 190/215/35mm

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This Thread Rolling Machine with ZR 90° Feeding System is designed for high-precision external thread forming using a cross-feeding mechanism. The workpiece rotates while two roller dies engage at a 90° angle to the axis, enabling efficient cold-forming of threads over a fixed length (in this case, 100 mm).

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Product Description

Specification

ITEM	MODE	DIAMETER	SCREW LENGTH (mm)	THREAD LENGTH(mm)	MOVING DIES STATIONARY LENGTH	MAIN MOTOR(HP)	MAX.OUTPUT (PCS/MIN.)	APPROX.WT(KG)	MACHINE SIZE(mm)
1	ZR15L	2.5-5	50-75	75	76/89/25	3	100-160	1200	1750x1600x1850
2	ZR15H	3-5	50-75	75	90/105/25	5	130-220	1800	1900x1530x2050
3	ZR20H	5-8	75-200	100	108/127/25+127/140/25	7.5/10	110-160	2000	2000x1600x1700
4	ZR25N	6-9	100-200	100	127/140/25	7.5	100-150	3300	2800x1600x1700
5	ZR30N	6-10	100-300	100	150/165/25	15	50-120	3900	2900x1600x1800
6	ZR40N	8-12	100-200	100	190/215/35	20	60-90	6700	3000x1700x2100
7	ZR60N	10-16	150-300	100	230/265/38	30	50-60	7600	3400x1700x2100
8	ZR70N	14-20	200-300	150	290/330/50	40	40-50	13000	4000x2200x2400
9	ZR80N	16-24	200-300	150	380/420/50	60	35-45	18500	4900x2400x2700
10	ZR90N	20-30	200-350	150	450/500/60	75	25-35	26000	5200x2400x3000
11	ZR98N	24-38	250-400	150	550/600/60	100	20-35	48000	7000x2800x3200

Moving Die Stationary Length Option

Option	Stationary Length	Application Notes
A	190 mm	Longer die support; suitable for larger diameter blanks or heavy-duty applications
B	215 mm	Maximum die stability; used for precision gear or long-threaded components
C	35 mm	Compact setup; ideal for lighter materials or space-constrained machines

Key Advantages

Benefit	Description
High Strength Threads	Cold forming increases tensile and fatigue strength
Smooth Surface Finish	No cutting marks; clean, polished thread profile
Material Efficiency	Chipless process reduces waste
Energy Efficient	Lower power consumption than machining
High Throughput	Fast cycle times for mass production
Flexible Setup	Interchangeable dies for various thread types and sizes

Operator Setup Guide

Step-by-Step Setup Procedure

Step 1: Select the Correct Die Set

Choose roller dies based on:

Thread type (e.g., ISO Metric, UNC, ACME)
Pitch and diameter
Die width compatibility with selected stationary length (190 mm / 215 mm / 35 mm)

⚠️ Ensure both movable and stationary dies match in profile and size.

Step 2: Install Dies into Die Holders

Mount the stationary die in the fixed holder.
Mount the movable die in the sliding carriage.
Secure using clamping screws and verify alignment using gauge blocks or templates.

Step 3: Adjust Die Clearance

Rotate workpiece spindle by hand to simulate rotation.
Bring both dies close to the blank without contact.
Use a feeler gauge or precision dial indicator to set the correct gap for material deformation.

Tip: Start with a slight clearance (approx. 0.05–0.10 mm) and adjust gradually during trial runs.

Step 4: Set Die Stroke and Feed Position

Adjust the stroke limit switch or servo position so the die engagement covers exactly 100 mm of the workpiece.
Confirm that the moving die's stationary length setting matches your application (choose between 190 mm, 215 mm, or 35 mm).
Lock all adjustments once the correct travel is achieved.

Step 5: Position Workpiece Between Centers

Insert the cylindrical blank between the centers or chuck system.
Ensure the blank extends beyond the dies by at least 5–10 mm to allow full thread formation.
Tighten centers securely but avoid over-clamping, which may distort the blank.

Step 6: Set Rotational Speed and Pressure

Select appropriate rotational speed based on material hardness and diameter:

Soft materials (aluminum): Higher RPM
Hard materials (alloy steel): Lower RPM

Set hydraulic pressure to begin low and increase gradually to form the thread properly.

Material Type	Suggested RPM Range
Carbon Steel	30–60 RPM
Alloy Steel	20–40 RPM
Stainless Steel	25–50 RPM
Aluminum	50–100 RPM

⚠️ Never exceed manufacturer-recommended pressure or speed limits.

Step 7: Run a Trial Pass

Perform a test run with no feed to observe die synchronization.
Then engage the feed slowly and monitor thread formation visually and via measuring tools.
Measure the first few threads using a thread micrometer or pitch gauge.

Step 8: Fine-Tune for Quality

If thread depth or profile is incorrect:

Adjust die clearance
Fine-tune pressure settings
Recheck alignment

Repeat trial passes until acceptable results are achieved.

Step 9: Start Production Run

Once the setup is verified, load blanks one at a time or via an automatic loader if equipped.
Monitor the process regularly for consistency and quality.
Record key parameters (pressure, RPM, die settings) for future reference.