Engine Rebuilding Machine
Engine Rebuilding Machine
Crankshaft grinding machine MQ8260A/C
The crankshaft grinder model MQ8260C is modified on the basis of the Model MQ8260A and intended for use in the automobiles tractors diesel engine works and their repair ships to grind the journals and crankpins of crankshafts.
The published data for this model lists max.work swing diameter of mm Φ580 Φ580 Φ580 Φ600 Φ600 and max.work length of mm 1600 1800 2000 1600 1800.
- Model code MQ8260A/C
- Supplied by Shaanxi Jiade Group Co., Ltd, Xi'an, China
- Trade terms FOB, CFR, CIF, payment TT 30% with order and 70% before shipment
- Manual, packing list and shipping documents included
Product Overview
What the Crankshaft grinding machine MQ8260A/C Does
The crankshaft grinder model MQ8260C is modified on the basis of the Model MQ8260A and intended for use in the automobiles tractors diesel engine works and their repair ships to grind the journals and crankpins of crankshafts.
Key Benefits
Why Workshops Buy This Machine
Keeps the Work In House
Operations that would otherwise be sent out stay on your floor, which is what removes engines scrapped because machining capacity is not available locally.
Parameters You Can Plan Around
The published data for this model lists max.work swing diameter of mm Φ580 Φ580 Φ580 Φ600 Φ600 and max.work length of mm 1600 1800 2000 1600 1800.
Documented and Supported
The machine ships with an operation manual and a named contact who answers on WhatsApp, so commissioning questions do not go unanswered.
Matched Tooling Available
Chucks, arbors, vises and measuring equipment from the same supplier, quoted with the machine instead of chased separately.
Application Scenarios
Where the Crankshaft grinding machine MQ8260A/C Earns Its Place
- Cylinder head resurfacing and valve seat work
- Block boring and honing to oversize
- Crankshaft grinding to the next undersize
- Con rod and valve reconditioning
Scenarios are typical for engine rebuilding machine of this type. If your part is outside them, send the drawing and we will say plainly whether this model suits it.
Who It Is For
The Buyers This Machine Was Specified For
Problems It Solves
Three Situations This Machine Fixes
Subcontracting Delay
Sending this operation out adds days to every job. Running it in house on the Crankshaft grinding machine MQ8260A/C removes the queue you do not control.
Parts No Longer Available
When an original part cannot be bought, the only route left is to make or restore it, which needs the capacity this machine provides.
Unpredictable Quality
Work done on improvised equipment varies between operators. A purpose built machine with published parameters makes the result repeatable.
Technical Features
Features Listed by the Manufacturer
- This arrangement facilitates table spacing for the grinding of the next journal or crankpin.
- ·Four different work speeds are obtainable by making use of a double – speed motor and the belts in workhead.
- ·Union chucks are used in the headstock and tailstock for adjusting eccentricity up to 120 mm.
- ·Friction coupling is used in the headstock transmission chain for its easy adjustment.
- ·Table longitudinal traverse is operated either by hand or by power.
- ·Wheelhead rapid approach and withdrawal is effected by hydraulic means .
Specifications
Published Parameter Table
| Max.work swing diameter | mm Φ580 Φ580 Φ580 Φ600 Φ600 |
|---|---|
| Max.work length | mm 1600 1800 2000 1600 1800 |
| Over table | mm Φ580 Φ580 Φ580 Φ600 Φ600 |
| Work diameter ground with steady rest | mm Φ30-Φ100 Φ30-Φ100 Φ50-Φ120 Φ30-Φ100 Φ30-Φ100 |
| Throw of crankshart | mm 110 110 120 110 110 2.Max.work |
| Length ground | in 3 |
| Jaw chuck | mm 1400 1600 1800 1400 1800 |
| Between centers | mm 1600 1800 2000 1600 1800 3.Max.work |
| Weight | kg 120 120 150 120 120 |
| Headstock Center height | mm 300 300 300 300 300 |
| Work speed | r/min 25,45,95 25,45,95 30,45,65,100 25,45,85 25,45,95 |
| Movement | mm 185 185 185 185 185 2.Wheel |
| Head rapid approach & withdrawal | mm 100 100 100 100 100 3.Wheel |
| Feed per turn of cross feed handwheel | mm 1 |
| Per grad of cross feed handwheel | mm 0.005 0.005 0.005 0.005 0.005 |
| Spindle speed | r/min 740,890 740,890 740,890 740,890 740,890 2.Wheel |
| Traverse per turn of handwheel Coarse | mm 5.88 5.88 5.88 5.88 5.88 |
| Fine | mm 1.68 1.68 1.68 1.68 1.68 2.Table |
| Overall capacity of motors | kw 9.82 9.82 11.12 9.82 9.82 |
| Working accuracy Ovality(new standard) | mm 0.005 0.005 0.005 0.005 0.005 |
Materials Manufacturing and Quality Control
How the Machine Is Built and Checked
Casting and Machining
Beds, columns and housings are machined in the group's production workshop on conventional and CNC equipment.
Assembly
Assembly is done in a dedicated workshop rather than on the production floor, which keeps swarf away from fitted surfaces.
Inspection
The inspection department checks components and assemblies before the machine goes to paint. Test records per machine are TBC on request.
Paint and Packing
Painting is done in house, then the machine is rust protected, crated and prepared for the container.
Certification scope for this model is marked TBC. We attach the certificates that actually apply to the machine and destination instead of publishing a blanket claim.
Customization Options
What Can Be Changed Before Production
- Motor voltage and frequency to match your supply, stated with the order
- Tooling and workholding packages selected for your first jobs
- Model variant chosen against your maximum workpiece size
- Documentation and marking requirements for your destination, TBC per country
Send a drawing of the part you need to produce. We select the model against that drawing rather than pushing the largest machine in the range.
Comparison With Other Models
Other Engine Rebuilding Machine Models Worth Comparing
| Crankshaft grinding machine MQ8260A/C | Max.work swing diameter mm Φ580 Φ580 Φ580 Φ600 Φ600 · this page |
|---|---|
| Vertical fine boring & milling machine TX1500/TX2150/TX2500 | Parameters supplied with quotation · compare |
| Vertical Fine Boring Machine T7220B/C | Parameters supplied with quotation · compare |
| Cylinder Boring & Surface Grinding Milling Machine TXM170A/TXM200A/TXM250A | Parameters supplied with quotation · compare |
| Vertical Cylinder Boring Milling Machine VBM160 | Parameters supplied with quotation · compare |
Use Guide
Before and After the Machine Arrives
Check the Foundation
Confirm floor loading, levelling points and the space needed around the machine before the container arrives.
Power and Air
Match supply voltage and frequency to the machine data plate and provide the isolator and any compressed air the model needs.
Level and Run In
Level the machine, check the oil levels, then run the spindle or drive up through its speed range before cutting.
First Article and Service
Machine a test piece, measure it, and keep a service schedule from day one. Send us the measurement if something looks wrong.
Related Products
More From the Engine Rebuilding Machine Range
Engine Rebuilding Machine
Cylinder Boring & Surface Grinding Milling Machine TXM170A/TXM200A/TXM250A
View specifications →
Related Guides and Solutions
Read Before You Order
Process Guide
Cylinder Boring and Honing Explained
Boring sets the diameter, honing sets the surface. A rebuild that skips the distinction ends up with a bore that measures right and still burns oil.
ComparisonValve Seat Cutting Compared With Valve Seat Grinding
Carbide seat cutting and stone grinding both produce a sealing seat. They differ in concentricity, repeatability and how much operator skill sits between you and a leak.
SolutionComplete Engine Rebuilding Workshop
A machine list that covers a cylinder head and block from strip-down to final assembly.
Answers
Crankshaft grinding machine MQ8260A/C Questions
What is the max.work swing diameter of the Crankshaft grinding machine MQ8260A/C?
The manufacturer data for this model gives max.work swing diameter mm Φ580 Φ580 Φ580 Φ600 Φ600. The full parameter list for every variant is in the specification table on this page and is confirmed in writing with the quotation.
Can you help me select the right variant of the Crankshaft grinding machine MQ8260A/C?
Yes. Send the part drawing, the workpiece size and the output you need and our engineers propose the model that fits. If you already know the model code, quote it and we confirm availability.
What are the trade and payment terms?
We work on FOB, CFR, CIF terms. Payment is TT 30% with order and 70% before shipment, or irrevocable L/C at sight. Orders placed through our Alibaba account carry trade assurance cover up to USD 300,000.
How is the Crankshaft grinding machine MQ8260A/C packed for export?
The machine is cleaned, rust protected and fixed to a pallet or into a wooden case sized for that machine, then stuffed into a container or shipped break bulk when it is over height. Packing is confirmed before production starts.
What is the delivery time?
Delivery depends on the model and on stock at the time of order, so we confirm a firm date on the proforma invoice instead of quoting one standard figure for the whole catalogue.
Do you supply tooling and spare parts for the Crankshaft grinding machine MQ8260A/C?
Yes. Chucks, arbors, vises and consumables are listed in our accessories range, and wear parts for this machine can be quoted with the machine or shipped later.
Get a Price for the Crankshaft grinding machine MQ8260A/C
Tell us the destination port and the variant you need. You get a specification, packing dimensions and a price.