Connecting Rod Boring Machine Manufacturer
Connecting Rod machine features a solid, vibration-free structure for stable performance. Variable speed and feed options allow precise control during operation. Micron-level tool setting ensures exceptional accuracy in every bore. Delivers a superior surface finish for high-quality results. Ideal for precision machining of connecting rods in engine rebuilding.
TECHNICAL SPECIFICATIONS
| STANDARD ACCESSORIES | CRB 350 |
|---|---|
| BORING SPINDLE DIA 14 | 1 NO |
| BORING SPINDLE DIA 24 | 1 NO |
| BORING SPINDLE DIA 38 | 1 NO |
| BORING SPINDLE DIA 50 | 1 NO |
| BORING TOOL | 4 NOS |
| TOOL SETTING MICROMETER | 1 NO |
| CENTERING DEVICE | 1 NO |
| CON ROD CLAMPING COLLAR DIA 28 MM | 1 NO |
| CON ROD CLAMPING COLLAR DIA 40 MM | 1 NO |
| CON ROD CLAMPING COLLAR DIA 65 MM | 1 NO |
| TAPER PINS FOR CON ROD CLAMPING | 1 SET |
| TOOL ADJUSTING BRACKET WITH KNOB | 1 NO |
| TECHNICAL SPECIFICATIONS | CRB 350 |
| BORE CENTER DISTANCE | 80 MM TO 350MM |
| BORING SPINDLE SPEED | INFINITY VARIABLE 100 -1000 RPM |
| A.C MOTOR | 1 HP |
| A.C. MOTOR | 0.25 HP |
Frequently Asked Questions
What is the price of the Uttam Connecting Rod Boring Machine?
The final price depends on the specific model configuration (such as the standard CRB-400 versus the extended CRB-650) and any additional tooling or centering fixtures your workshop requires. For an accurate, itemized commercial quote tailored to your operational budget, please click our “Enquiry Now” button or contact our Ahmedabad sales office directly.
What is the difference between the CRB-400 and CRB-650 models?
The primary difference lies in their capacity and structural dimensions:
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CRB-400: Features a maximum distance between boring centers of 400 mm, a maximum boring diameter capacity of 100 mm, and a total weight of approximately 500 kg. It is ideal for standard passenger vehicles and light commercial repair shops.
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CRB-650: Designed for heavy-duty workshops, it features an extended boring center distance of 650 mm, a larger maximum boring diameter capacity of 125 mm, and a heavier, more rigid structural frame weighing 650 kg to handle heavy diesel and tractor connecting rods.
Can this machine handle both the small-end bushing and big-end boring of a connecting rod?
Yes. The Uttam Connecting Rod Boring Machine is designed to precisely bore both the small-end (piston pin side) bush and the big-end (crankshaft journal side) of the rod. Its precise centering mechanism ensures that the parallel distance and alignment between both centers are perfectly maintained according to OEM specifications.
What tooling, cutters, and standard accessories are included with the machine?
Every machine is shipped with a comprehensive standard tooling kit to get your workshop started immediately. This includes boring bars, micro-adjustable boring cutters, centering cones, parallel blocks, and standard clamping devices. Specialized or custom-sized clamping fixtures for unique industrial engine rods can also be fabricated upon request.
How does the machine ensure perfect parallelism between the big-end and small-end bores?
Ensuring exact parallelism is critical to prevent engine vibration and premature bearing wear. Our machine utilizes a dedicated, highly rigid centering column combined with precise centering cones and dial gauges. This specialized clamping setup allows operators to true the rod in its actual machining position, locking both ends into perfect, distortion-free alignment before the boring spindle begins its pass.
What is the benefit of the Infinitely Variable Spindle Speed (VFD) on this machine?
Different connecting rod materials—such as bronze bushes on the small end versus hardened steel or aluminum alloys on the big end—require completely different cutting dynamics. The integrated Variable Frequency Drive (VFD) allows operators to smoothly adjust spindle speeds (typically from 100 to 1200+ RPM) and feed rates. This variable control prevents tool chatter, optimizes heat dissipation, and delivers an ultra-smooth, mirror-like micron finish.