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Home Thread Rolling Machine BIG Large Thread Rolling Machine ZR 90°feeding (GEAR OUTSIDE)Screw Length 75-200mm

BIG Large Thread Rolling Machine ZR 90°feeding (GEAR OUTSIDE)Screw Length 75-200mm

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BIG Large Thread Rolling Machine with ZR 90° Feeding is a high-capacity, industrial-grade cold-forming system designed for the efficient production of external threads and gears on cylindrical workpieces. It utilizes a cross-feeding mechanism, where two hardened roller dies are positioned perpendicular to the axis of the rotating blank, enabling precise and uniform formation of threads or external gear teeth.

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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

Maintenance

1. Daily Maintenance

Task	Description
Visual Inspection	Check for oil leaks, loose bolts, damaged components, or unusual wear on dies and guides.
Lubrication Check	Ensure all moving parts are properly lubricated (guide ways, roller die slides, spindle bearings).
Clean Dies & Work Area	Remove metal dust, debris, or residual lubricant from dies and work zone to prevent contamination.
Check Hydraulic System	Inspect hydraulic fluid levels and look for signs of leakage or overheating.
Die Alignment	Confirm that both stationary and movable dies are correctly aligned before starting operations.

2. Weekly Maintenance

Task	Description
Lubrication System Servicing	Top up or replace lubricants as per manufacturer specifications. Clean filters and check pump pressure.
Hydraulic Fluid Quality Check	Test for contamination or degradation; change if necessary.
Die Surface Inspection	Examine roller dies for wear, chipping, or scoring. Replace if damage affects thread/gear profile quality.
Tighten Fasteners	Re-torque critical bolts, especially those securing the die holders and base frame.
Machine Base Cleaning	Wipe down and clean the machine base to avoid accumulation of swarf or coolant residue.

3. Monthly Maintenance

Task	Description
Full Lubrication System Flush	Drain and flush the system; refill with recommended lubricant.
Spindle & Bearing Inspection	Check spindle rotation smoothness and bearing play. Replace worn bearings if needed.
Control Panel Inspection	Dust off PLC/HMI panel, inspect wiring for looseness or heat damage, and verify emergency stop function.
Alignment Calibration	Use precision gauges to realign roller dies and ensure correct engagement angle (90° feeding path).
Safety Guarding Check	Ensure all guards, interlocks, and safety devices are functioning properly.

️ 4. Quarterly Maintenance

Task	Description
Hydraulic Pump Service	Disassemble and inspect internal components like seals, valves, and pistons. Replace any worn parts.
Servo Motor / Drive System Check	Test motor performance, encoder feedback, and drive current draw. Lubricate gears if applicable.
Die Hardness & Profile Verification	Use hardness testers and profile projectors to confirm die integrity and accuracy.
Coolant/Lubricant System Maintenance	If used, clean and sanitize coolant reservoirs, check spray nozzles, and test flow rates.
Update Software/Firmware (if applicable)	Ensure control system software is up to date with latest patches or enhancements.

5. Annual Maintenance (Major Service)

Task	Description
Complete Machine Overhaul	Disassemble major components for thorough inspection, cleaning, and reconditioning.
Replace Wear Parts	Bearings, seals, hydraulic hoses, electrical relays, and other consumables should be replaced based on usage.
Re-calibration	Perform full calibration of die alignment, feed speed, pressure settings, and rotational synchronization.
Structural Integrity Check	Inspect the machine frame and base for cracks or warping due to long-term stress.
Training Review	Conduct refresher training for operators and maintenance staff on best practices and safety protocols.

Recommend Tools and Consumables

Precision measuring tools (micrometers, dial indicators)
Die cleaning brushes and solvents
High-performance die lubricants (oil or paste)
Replacement O-rings, seals, and gaskets
Hydraulic oil (ISO 46 or equivalent)
Electrical spare parts (relays, fuses, contactors)

Yiming-Essebi Machine Series Center

BIG Large Thread Rolling Machine ZR 90°feeding (GEAR OUTSIDE)Screw Length 75-200mm

1. Daily Maintenance

2. Weekly Maintenance

3. Monthly Maintenance

️ 4. Quarterly Maintenance

5. Annual Maintenance (Major Service)

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