28
PROBLEM
PROBABLE CAUSE
SOLUTIONS
SEC.
Barrel
1. Mandrel not trued
A. True stone & shoes
2. Improper stone length
A. Use longer stone or shorten guide
shoes on both ends
B. Use mandrel with longer stone &
shoes
3. Improper stone
A. Use finer stone
Taper in Open Hole
1. Workpiece is not being reversed
A. Reverse workpiece on mandrel
2. Mandrel not trued
A. True stone & shoes
3. Improper stroke
A. Lengthen overstroke on tight end
4. Stroker Arm and Spindle not aligned
A. Align Stroker Arm and Spindle
Taper in Blind Hole
1. Improper stone length
A. Shorten stone and shoes to 3/4
length of bore
B. True stone & shoes frequently
2. Inadequate oil flow
A. Adjust Oil Nozzle
3. Inadequate relief in blind end
A. Provide sufficient relief
B. Short stroke tight end
C. Use hard tip stone
Out-Of-Round
1. Undersize honing tool
A. Change honing tool
2
2. Mandrel not true
A. True stone & shoes
3. Workpiece flexing (thinwall)
A. Decrease cutting pressure
2
4. Improper stone
A. Use softer stone
Waviness
1. Improper mandrel or stone length
A. Use mandrel with sufficient stone
length to bridge waviness in bore
Rainbow
1. Improper mandrel
A. Use L, BL or multi-stone mandrel
(stone length should be 1-1/2
times bore length
2. Improper stroke
A. Shorten overstroke
3. Improper stone
A. Use softer stone
Rough Finish
1. Improper feed
A. Decrease cutting pressure
2
2. Mandrel not trued
A. True stone & shoes to exact hole dia.
3. Improper stone
A. Use finer stone
4. Improper or diluted coolant*
A. Check coolant*
4
5. Soft or exotic materials
A. Use bronze mandrel or bronze
shoes
Scratches in Bore
1. Improper feed
A. Decrease cutting pressure
2
(Random)
2. Improper stone
A. Use finer stone
B. Use softer stone
3. Improper mandrel
A. If using hard steel mandrel, change to
soft steel mandrel; If using soft steel
mandrel, change to bronze mandrel
4. Improper or diluted coolant*
A. Check coolant*
4
*NOTE: Many honing problems, such as poor stone life, and rough finish, are caused by wrong coolant; insufficient
coolant, dirty coolant, or contaminated coolant. Use ONLY clean, Sunnen Industrial Honing Oils or Water-Based Coolant.
Make sure that coolant is neither diluted nor "cut" with other coolants. Keep solvents and cleaning fluids away from
Machine.
Summary of Contents for LBB-1660
Page 8: ...NOTES viii...
Page 34: ...NOTES 26...
Page 38: ...NOTES 30...
Page 40: ...NOTES 32...
Page 44: ...NOTES 36...
Page 45: ...37 APPENDIX E DECLARATION OF CONFORMITY CE PAGE 1 OF 2 SAMPLE CE DOCUMENT...
Page 46: ...38 APPENDIX E DECLARATION OF CONFORMITY CE PAGE 2 OF 2 SAMPLE CE DOCUMENT...
