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World Brand JL21 Series Variable Stroke Press Machines for Sale

Name: World Brand JL21 Series Variable Stroke Press Machines for Sale
Brand: WORLD
Rating: 5.0 (58 reviews)

JH21L c frame variable stroke press machine is suitable for one press with different tools. Stroke length is adjustable through the mechanism installed in front of the crankshaft. This stroke adjustable press standard equips with dry type pneumatic clutch, hydraulic overload protection, automatic lubrication system and PLC central control system.

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Model:
JH21L
Brand:
WORLD

Product Description

World brand JL21 variable stroke press machines

variable stroke press clutch

1. Eccentric Bush Stroke Adjustable Mechanism‌
Allows variable stroke length for versatile applications. Easy manual adjustment without disassembly. Adapts to different materials or production requirements.

2. Dry Type Pneumatic Clutch & Brake System‌
Ensures precise and rapid engagement/disengagement. Low maintenance due to dry operation (no oil/lubricant required). Ideal for high-speed applications with minimal wear.
3. PLC (Programmable Logic Controller) Control‌
Advanced automation for consistent operation. Easy programming and adaptability to complex processes. Real-time monitoring and fault diagnostics.

4. Hydraulic Overload Protection‌
Safeguards against excessive force, preventing damage. Automatically disengages under high load conditions. Extends equipment lifespan by reducing mechanical stress.
5. Circulation Center Thin Oil Lubrication System‌
Optimizes lubrication for moving parts, reducing friction. Improves efficiency and minimizes heat generation. Lowers maintenance costs with reliable oil circulation.
6. Two-Hand-Button Safety Control‌
Complies with safety standards (e.g., ISO 13851). Prevents accidental operation by requiring simultaneous activation. Enhances operator safety in hazardous environments.
7. Standard Equip with Frequency Inverter‌
Enables precise speed control for energy efficiency. Smooth acceleration/deceleration reduces mechanical shock. Compatible with automation systems for seamless integration.
8. Motorized Slider Adjustment System‌

Eliminates manual effort for position adjustments. Ensures repeatable accuracy in production processes. Reduces downtime during setup changes.

Power press stroke length adjusting mechanism

The mechanism is installed in front of the crankshaft, adjustable by manual. Motorized adjustment is optional. There is a hole for operator to check the right stroke length position.

A knob for adjusting the stroke length is located on the press console. When adjusting, the pneumatic cylinder will drive the adjusting shaft out. Use a spanner to adjust the shaft to the wanted position. Turn back the stroke adjusting knob and the shaft will return back to original position.

Technical parameters of variable stroke press machine

				JH21-25L	JH21-45L	JH21-63L	JH21-80L	JH21-110L	JH21-125L	JH21-160L	JH21-200L	JH21-250L
Capacity			kN	250	450	630	800	1100	1250	1600	2000	2500
Nominal Stroke			mm	3	4	4	5	6	6	6	6	8
Slide Stroke			mm	10-110	20-120	10-150	10-150	10-160	10-160	16-160	18-180	21-220
SPM	Fixed		min^-1	100	80	70	60	50	50	40	35	30
SPM	Variable		min^-1	80-120	70-90	60-80	50-70	40-60	40-60	35-50	30-40	25-35
Max. Die Height			mm	250	270	300	320	350	350	350	450	500
Die Height Adjustment			mm	50	60	80	80	80	80	110	110	120
Throat Depth			mm	210	230	300	300	350	350	380	390	420
Between Columns			mm	450	550	620	640	710	760	810	920	960
Bolster		LR	mm	700	810	900	1000	1150	1150	1300	1400	1400
		FB	mm	400	440	580	580	680	680	740	760	800
		Thk	mm	80	110	110	120	140	140	150	160	170
Bolster Opening			mm	φ170×20	φ180×30	φ200×40	φ200×40	φ260×50	φ260×50	φ300×50	φ300×50	φ320×50
(Up Hole Dia.×Dpth×Low Hole Dia.)			mm	×φ150	×φ160	×φ180	×φ180	×φ220	×φ220	×φ260	×φ260	×φ280
Slide Area		LR	mm	360	600	680	710	810	810	920	970	970
Slide Area		FB	mm	300	360	400	440	500	500	580	600	650
Shank Hole		Dia.	mm	φ40	φ40	φ50	φ50	φ60	φ60	φ65	φ65	φ70
Shank Hole		Dpth	mm	60	60	80	80	80	80	85	90	90
Main Motor Power			kW	4	5.5	7.5	7.5	11	11	15	18.5	22
Dimensions		FB	mm	1500	1610	1680	1750	1860	1860	2250	2500	2730
		LR	mm	950	1170	1260	1310	1400	1450	1600	1700	1750
		H	mm	2650	2850	3050	3150	3350	3350	3800	4200	4300
Net Weight			kg	3100	4350	6500	8500	10000	10700	14500	17950	25400