Cast Iron Straight Edges, camelback straight edge, Cast Iron Parallel Straight Edge, Supplier of Straight Edges, Gujarat, India.

CAST IRON BOW TYPE(CAMEL BACK TYPE) AND PARALLELTYPE(I-SECTION)



Bow Type / Camel Back Type	Parallel / I-Section

Cast Iron Straight Edges are widely used for setting up and leveling machinery and for checking and spotting bearing surfaces during hand scrapping operations. Properly supported, they may be used with various indicating devices to check surface flatness of large Machined areas like Surface Tables, Machine Tables & Beds, Machine guide ways, etc.

SALIENT FEATURES :

Offered in two types viz. Bow shaped or Camel Back type and I-Section or Parallel type, made generally as per IS-5268- 1991.
Bow shaped Straight Edges are provided with pads on their bow for supporting Engineer's Level.
Made from close grained Cast Iron Castings conforming to Grade FG-220 of IS-210. Casting duly stress relieved.
Offered in hand-scrapped finish to various Grades.
High spots uniformly distributed. Proportion of bearing area of the working surface not less than 20% for Grade-0 and Grade-1 and not less than 10% for Grade- 2 accuracy Straight Edges.
Flatness of side faces: Any 300 mm length flat within 25 microns for Grade-0, Grade-1 and within 50 microns for Grade-2.
Squareness of working surfaces and side faces when checked with side face laid on Grade-1 Surface Plate:
For Grades-0 and 1 : Within 8 microns per 25 mm
For Grade-2: Within 15 microns per 25 mm
Parallelism of side faces:
For Grades-0 and 1: Not exceeding 30 microns per 300 mm and 60 microns over total length.
For Grade-2 : Not exceeding 60 microns per 300 mm and 120 microns over any total length.
Supplied with rexine cover for protection of working surfaces.
Actual dimensions of Straight Edges may be more than those stated in the Tables.

STANDARD SIZE FOR CAMEL BACK/BOW TYPE & TOLERANCE ON FLATNESS AND PARALLELISM
Length of St. Edge	Min. width of working face	Min. overall depth	Min. flange thickness	Tolerance on flatness and parallelism
Length of St. Edge	Min. width of working face	Min. overall depth	Min. flange thickness	Grade-0	Grade-1	Grade-2
(mm)	(mm)	(mm)	(mm)	(μm)	(μm)	(μm)
300	30	80	10	2	3	6
500	35	130	12	3	5	10
800	40	175	14	3	6	10
1000	45	180	16	5	10	20
1600	55	275	20	6	12	20
2000	65	300	24	10	20	40
3000	90	400	32	15	30	60
4000	100	500	38	20	40	80
5000	100	550	46	25	50	100

Other sizes on request

STANDARD SIZE FOR PARALLEL/I-SECTION & TOLERANCE ON FLATNESS AND PARALLELISM
Length of St. Edge	Min. width of working face	Min. overall depth	Min. flange thickness	Tolerance on flatness and parallelism
Length of St. Edge	Min. width of working face	Min. overall depth	Min. flange thickness	Grade-0	Grade-1	Grade-2
(mm)	(mm)	(mm)	(mm)	(μm)	(μm)	(μm)
300	25	75	8	2	3	6
500	30	75	10	3	5	10
800	30	80	10	3	6	10
1000	35	100	12	5	10	20
1600	50	150	12	6	12	20
2000	50	150	14	10	20	40
3000	55	250	16	15	30	60
4000	60	300	18	20	40	80
5000	65	350	20	25	50	100

Other sizes on request