China Caterpillar Tractor manufacturers

1.Caterpillar drive is controlled by direct-connection frequency variation
2.Upper caterpillar adopts cylindar soft compression which can automatically conform to different specs of pipeline and keep good contact pressure with pipeline; lower caterpillar can be adjusted by electricity vertically conforming to specs of pipeline.
3.Adopt v type rubber block with high friction coefficient
Parameter of caterpillar tractor

Model	QY125/3	QY250/4	QY450/4	QY630/6	QY800/6
drawing range/mm	φ32-φ125	φ63-φ250	φ110-φ450	φ250-φ630	φ315-φ800
caterpillar amount	2	3	4	6	6
contact length/mm	1200	1400	1600	1600	2000
max force/N	7500	10000	20000	30000	40000
haulage speed m/min	0.6-12	0.4-8	0.1-1.5	0.06-1.2	0.05-1

Model	QG250	QG450	QG630	QG800
max dia	250	450	630	800
Mini dia	63	110	250	315
Dia of saw blade	250	250	305	355
Cutting power	2.2	3	4	4
Course of saw blade	1500

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