Cold thread rolling YG series

carbon steelfor metal fabricationfor the construction industry

Product overview
YG Machinery’s automatic thread rolling machine processes rebar from 16 to 40 mm using cold rolling to form threads. Typical output is 30–40 pcs/h (up to 50 pcs/h with an auto-loading rack). Cold rolling increases thread tensile and fatigue strength while reducing onsite processing time and labor.

Application scenarios
Construction Engineering
Rebar connection processing for high-rise and residential projects; one-time forming without open flame.

• Use case: fast onsite rebar threading to accelerate construction schedules.
• Practical tip: pair with rebar couplers to increase joint strength.

Bridge & Tunnel Projects
Processes large-diameter rebar (32–40 mm); cold rolling significantly improves thread fatigue strength.

• Use case: high-strength threaded rebar for heavy infrastructure.
• Practical tip: activate the built-in cooling system to avoid precision loss from high temperatures.

Industrial Manufacturing
Produce mechanical parts and fasteners supporting common rebar grades with high thread precision.

• Use case: bulk production of threaded components and fasteners.
• Practical tip: select hydraulic versions for very high-strength metal processing.

Prefabricated Component Factories
Bulk rebar processing for precast beams and walls; automatic feeding reduces manual intervention.

• Use case: automated, repeatable production of threaded rebar for precast elements.
• Practical tip: enable auto-counting to simplify production capacity tracking.

Core advantages

• High efficiency & automation: integrated auto-feeding, rib stripping and threading enable one operator to run the machine; up to 5× faster than manual methods.
• High precision: thread tolerance ≤ 0.05 mm; consistent diameters meeting major construction standards.
• Durable structure: hardened components (high manganese steel) for long service life under continuous 8-hour operation.
• Flexible adaptation: supports multiple diameters (16–40 mm) with quick die changes; optional extended lengths available.

Core technical highlights

• Cold rolling technology: increases tensile strength and fatigue resistance without heat treatment.
• Automatic PLC-controlled system: reliable rib stripping, stored parameters for repeated production runs.
• Circulating cooling system: reduces temperature and prevents thread deformation; reusable coolant reduces consumable costs.

Success summaries

• US project: Replaced manual machines (8 pcs/h) with the automatic thread rolling machine; single-operator output rose to ~35 pcs/h and thread pass rate improved to ~99.8%, reducing labor and rework.
• Germany factory: Processing 32 mm rebar time reduced from ~3 min to ~90 s; cooling limited thread deformation to ≤ 0.03 mm and doubled daily capacity.

FAQ highlights

• Processing range: standard 16–40 mm; custom extended versions available for longer workpieces.
• Production rate: normally 30–40 pcs/hour; increased with auto-loading accessories.
• Maintenance: rolling dies service life approx. 8,000 pcs; annual maintenance cost typically low relative to equipment price.

Technical specifications

• Models: YGS-40; YGT-40; YGA-40.
• Processing diameter range: 16–40 mm.
• Thread rolling length: YGS-40: 0–80 mm; YGT-40: 0–80 mm; YGA-40: 0–100 mm.
• Power / voltage: YGS-40: 4 kW / 380 V 50 Hz; YGT-40: 4 kW / 380 V 50 Hz; YGA-40: 7.5 kW / 380 V 50 Hz.
• Working efficiency: YGS-40: 15 s/forming; YGT-40: 8 s/forming; YGA-40: one-touch auto forming.
• Machine weight: YGS-40: 320 kg; YGT-40: 350 kg; YGA-40: 400 kg.
• Machine size: YGS-40: 115 × 50 × 106 cm; YGT-40: 110 × 60 × 130 cm; YGA-40: 126 × 70 × 106 cm.
• Type / automation level: Standard type (YGS-40); Upgrade type (YGT-40); Full automatic type (YGA-40).