De-shelling and Re-shelling, of old Mill Rollers

De-shelling, Re-shelling, Shrink fitting of shell on shaft, grooving cutting of chevron grooves, bearing journal polishing and ultrasonic testing of Mill Roller shafts as per below mentioned details Material of shell : Cast Iron : IS : 11201-1985 Hardness : 180-210 BHN Material of Nozzle : Gun Metal (for Semi-coach rollers)

Semi couch Top Roller for 2nd and 3rd Mill having 50 mm pitch, 50o angle and 43 mm depth. Roller shell size:- OD – 1000 mm x 1980 mm length Detail drawing No. : SCSM-NP-25 REV-‘1’ (Grooving purpose) SCSM/MILLS-66 Rev – ‘4’ (Shelling purpose)

Discharge Roller for 2nd and 3rd Mill having 50 mm Pitch, 45o angle and 48 mm depth. Roller shell size:- 1000 mm x 1980 mm length Detail drawing No. : SCSM-NP-25 REV-‘1’ (Grooving purpose) SCSM/NP-06 Rev-‘4’ (Shelling purpose)

Semi coach Top Roller for 1st & 4th Mill (Semi Couch) having 45 mm Pitch, 45o angle and 49.7 mm depth Roller shell size:- OD 1025 mm x 1980 mm length Detail drawing No. : SCSM-MILLS-216, SCSM-MILLS-219

Bottom Roller for 1st & 4th Mill having 45 mm Pitch, 40o angle and 45.3 mm depth. Roller shell size :- 1040 mm x 1980 mm length Detail drawing No. : SCSM-MILLS-217, SCSM-MILLS-218

Casting and machining of Trash plates for mill no. 2 & 3 as per drawing no. SCSM-Mills-015, Rev.-01. Material should be IS: 2644-1994 & casting should be free from blow holes. Teeth cutting & drilling detail drawing will be provided later.

JASSAL MECHANICAL WORKS (REGD)