What is a Belt Driven Spindle?

A Belt Driven Spindle is a precision-engineered component used in CNC machines, where power is transmitted from the motor to the spindle shaft via a belt and pulley system. This configuration offers flexibility in speed variation and torque control, making it ideal for a wide range of machining applications.

These spindles are commonly used in industries like automotive, die & mold, general engineering, aerospace, and metalworking, where a balance of power, performance, and affordability is crucial. We offer a wide range of Belt Driven Spindles for Drilling, Boring, and Milling Machine, Available in Different sizes BT30, BT40, BT50 .

Why Do We Need a Belt Driven Spindle?

Speed Versatility: Belt-driven systems allow for easy adjustment of spindle speed ranges by changing pulley ratios, making them adaptable for different materials and processes.
Cost-Efficiency: Compared to motorized spindles, belt driven spindles are economical, easy to maintain, and ideal for medium-duty operations.
Low Vibration Operation: The belt drive absorbs shocks and vibrations from the motor, resulting in smoother operation and better surface finish.
Reduced Heat Transfer: Since the motor is separated from the spindle shaft, it reduces heat buildup in the spindle, ensuring longer service life and consistent performance.
Ease of Maintenance: Simple construction makes it easier to inspect, replace belts, and maintain the system without major downtime.

Features of the Belt Driven Spindle

Flexible Speed Range: Allows adjustment to match the material and application requirements without changing the entire setup.
High Precision Bearings: Supports high-speed rotation with excellent axial and radial rigidity, essential for dimensional accuracy.
Robust Build Quality: Designed to withstand industrial conditions, ensuring long-lasting and reliable performance.
Customizable Pulley Sizes: Offers the flexibility to configure the drive system based on torque and speed needs.
Optional Cooling Options: Air or water cooling options available for applications requiring temperature control during continuous machining.

Type		B30-100	B40-120	B40-150	B50-155	B50-190	B50-190B
Housing Diameter	(mm)	ψ100	ψ120	ψ150	ψ155	ψ190	ψ190
		8,000	8,000	8,000	5,000	4,000	4,000
Max. Speed	(rpm)	10,000	10,000	10,000	6,000	6,000	6,000
		12,000	12,000	12,000	8,000	8,000	8,000
Bearing	(mm)	ψ45	ψ60	ψ70	ψ80	ψ100	ψ100
Preload		Rigid	Rigid	Rigid	Rigid	Rigid	Rigid
Lubrication		Grease	Grease	Grease	Grease	Grease	Grease
Pull-force	(N)	2,800	6,000	8,000	15,000	20,000	20,000
				8YU-48T (8,000rpm)
Belt(teeth)		5GT-52T	5GT-68T	5GT-72T (10,000 rpm) (12,000 rpm)	8YU-54T	8YU-60T	8YU-60T
		SK	SK	SK	SK	SK	SK
		CAT	CAT	CAT	CAT	CAT	CAT
Tool interface		BT	BT	BT	BT	BT	BT
		ISO	ISO	ISO	ISO	ISO	ISO
Weight	(Kg)	13	29	52	66	110	86
Power	(KW)	Customer	Customer	Customer	Customer	Customer	Customer