1st Operation too loose
| Causes | 1st Operation rolls worn |
| 1st Operation rolls too loose | |
| 1st Operations rolls profile too wide | |
| top | |
1st Operation too tight
| Causes | |
| 1st Operation rolls too tight | |
| 1st Operation rolls profile too narrow | |
| top | |
Seam length too long
| Causes | 1st Operation rolls too loose |
| 1st Operation rolls profile too wide | |
| 1st Operation rolls worn | |
| 2nd Operation rolls too tight | |
| 2nd Operation rolls profile too wide | |
| 2nd Operation rolls worn | |
| top | |
Seam length too short
| Causes | 1st Operation rolls too tight |
| 1st Operation rolls profile too narrow | |
| 2nd Operation rolls too loose | |
| top | |
Cover hook too long
| Causes | 1st Operation rolls too tight |
| 1st Operation rolls profile too narrow | |
| 1st and 2nd Operation rolls arms worn | |
| Chuck diameter down or worn | |
| Lifter force too weak | |
| Lifter spring damaged | |
| Cover cut edge too great | |
| Body hook too short | |
| top | |
Cover hook too short
| Causes | 1st Operation rolls too loose |
| 1st Operation rolls profile too wide | |
| 1st Operation rolls worn | |
| 1st Operation rolls high relative to chuck | |
| 2nd Operation rolls too loose | |
| Lifter force too strong | |
| Cover cut edge too small | |
| Body hook too long | |
| Deep countersink | |
| top | |
Body hook too long
| Causes | 1st Operation rolls too loose |
| 2nd Operation rolls too tight | |
| Pin height incorrect | |
| Lifter force too strong | |
| Mushroom flanges | |
| top | |
Body hook too short
| Causes | 1st Operation rolls too loose |
| 1st Operation rolls profile too narrow | |
| 2nd Operation rolls too loose | |
| Pin height incorrect | |
| Lifter force too weak | |
| Lifter spring damaged | |
| Underflanged bodies | |
| Overflanged ends | |
| top | |
Countersink too deep
| Causes | 1st Operation rolls too loose |
| 1st Operation rolls worn | |
| 1st Operation rolls high relative to chuck | |
| 2nd Operation rolls worn | |
| 2nd Operation rolls high relative to chuck | |
| Chuck radius incorrect | |
| Pin height incorrect. | |
| Cover cut edge too great | |
| top | |
Countersink too shallow
| Causes | 1st Operation rolls too tight |
| 1st Operation rolls low relative to chuck | |
| 2nd Operation rolls low relative to chuck | |
| Cover cut edge too small | |
| top | |
Hook drop
| Causes | 1st Operation rolls too loose |
| 1st Operation rolls worn | |
| 1st Operation rolls bearings worn | |
| 1st Operation rolls high relative to chuck | |
| 1st Operation rolls low relative to chuck | |
| 2nd Operation rolls too tight | |
| Chuck diameter down or worn | |
| Knockdown flanges | |
| Cover poor curl | |
| Lining compound excessive | |
| Lining compound uneven | |
| Body hook too long | |
| Product in seam | |
| top | |
Peaks
| Causes | 1st Operation rolls too tight |
| 1st Operation rolls too loose | |
| 1st Operation rolls profile too wide | |
| Cover cut edge too great | |
| Product in seam | |
| top | |
Wrinkles
| Causes | 1st Operation rolls too tight |
| 1st Operation rolls too loose | |
| 1st Operation rolls profile too wide | |
| 1st Operation rolls worn | |
| 2nd Operation rolls too loose | |
| 2nd Operation rolls worn | |
| Cover poor curl | |
| top | |
Reverse wrinkle
| Causes | 1st Operation rolls too tight |
| 1st Operation rolls profile too narrow | |
| top | |
Skidders
| Causes | 1st Operation rolls too tight |
| 1st Operation rolls worn | |
| 2nd Operation rolls too tight | |
| 1st and 2nd Operation rolls bearings stiff | |
| 1st and 2nd Operation rolls touching chuck lip | |
| Chuck radius incorrect | |
| Chuck diameter down or worn | |
| Chuck greasy | |
| Seaming spindle – excess vertical play | |
| Pin height incorrect | |
| Lifter force too weak | |
| Lifter spring damaged | |
| Lifter bearing stiff | |
| Lifter greasy | |
| Mushroom flanges | |
| Body hook too short. | |
| Overflanged ends | |
| Product in seam | |
| Incorrect greasing | |
| top | |
Sharp edge
| Causes | 1st Operation rolls too tight |
| 1st Operation rolls profile too narrow | |
| 1st Operation rolls high relative to chuck | |
| 1st Operation rolls low relative to chuck | |
| 2nd Operation rolls too tight | |
| 2nd Operation rolls high relative to chuck | |
| Chuck top lip worn | |
| Seaming spindle – excess vertical play | |
| Lifter force too strong | |
| Cover damaged curl | |
| Product in seam | |
| top | |
Split sharp edge
| Causes | Product in seam |
| top | |
False seam
| Causes | 1st and 2nd Operation rolls poor returning |
| Cover badly cushioned on can | |
| Cover guide/can guide alignment | |
| Knockdown flanges | |
| Cover damaged curl | |
| top | |
Damaged cover curl
| Causes | 1st and 2nd Operation rolls poor returning |
| Cover separator fingers | |
| Cover badly cushioned on can | |
| Cover guide/can guide alignment | |
| Can feed turret / seaming head timing | |
| Cover curl poor | |
| Cover curl damaged | |
| Poor delivery / packaging | |
| top | |
Knockdown flanges
| Causes | 1st and 2nd Operation rolls poor returning |
| Ejector cam rod adjustment | |
| Pin height incorrect | |
| Cover guide adjustment | |
| Infeed chain / cover feed turret timing | |
| Poor delivery / packaging | |
| Can handling / conveyors poor | |
| top | |
Miss-assembly of can and cover
| Causes | 1st and 2nd Operation rolls poor returning |
| Ejector cam rod adjustment | |
| Cover separator fingers | |
| Cover badly cushioned on can | |
| Cover guide/can guide alignment | |
| Infeed chain / can feed turret timing | |
| Can feed turret / seaming head timing | |
| Product in seam | |
| top | |
Blowing can
| Causes | 1st Operation rolls too tight |
| 1st Operation rolls profile too narrow | |
| 1st Operation rolls worn | |
| 1st Operation rolls high relative to chuck | |
| 2nd Operation rolls too tight | |
| 2nd Operation rolls low relative to chuck | |
| 1st and 2nd Operation rolls touching chuck lip | |
| Pin height incorrect | |
| Lifter force too strong | |
| Lifter bearing stiff | |
| Can feed turret / seaming head timing | |
| top | |
Mushroom flanges
| Causes | Filler lifter pressure too strong |
| Overflanged ends | |
| Delivery / packaging poor | |
| Can handling / conveyors poor | |
| top | |
Blowing seam
| Causes | 1st Operation rolls too tight |
| 1st Operation rolls low relative to chuck | |
| 2nd Operation rolls too tight | |
| Lining compound excessive | |
| Lining compound uneven | |
| Body hook too long | |
| Product in seam | |
| top | |