Spaenaur

CATALOG 13
The tolerances shown on this page are for unplated AM series only. For tolerances on other series, consult SPAENAUR.
TOLERANCE FOR THICKNESS
OD AND ID GUIDE CLEARANCE
THICKNESS t
TOLERANCE
OD OR ID
CLEARANCE FOR
MM INCH MM INCH
SIZE
OD OR ID
0.3 .0118
MM INCH MM INCH
0.4 .0157 +.02 +.0008 up to 16 up to 0.63 0.2 0.008
0.5 .0197 -.06 -.0024 over 16 to 20 0.63 to 0.79 0.3 0.012
0.6 .0236
over 20 to 26 0.79 to1.02 0.4 0.016
0.7 .0276
over 26 to 31.5 1.02 to 1.24 0.5 0.020
0.8 .0315
over 31.5 to 50 1.24 to 1.97 0.6 0.024
0.9 .035 +.03 +.0012 over 50 to 80 1.97 to 3.14 0.8 0.031
1.0 .039 -.09 -.0035 over 80 to 140 3.15 to 5.52 1.0 0.039
1.1 .043
over 140 to 250 5.52 to 9.85 1.6 0.063
1.25 .049
1.5 .059
NOTE: Inside Guiding is preferred. Guide Bolts should
be Rc55-60 ground and polished.
1.75 .069
OD/ID TOLERANCE
2.0 .078
+.04 +.0016
OD/ID RANGE TOTAL TOLERANCE
2.25 .088 -.12 -.0047
MM INCH MM INCH
2.5 .098
1.6 to 3 .063 to .118 0.102 0.004
3.0 .118
3.0 to 6 .118 to .236 0.127 0.005
3.5 .138
4.0 to 16.0 .157 to .630 ±.127 ±.005
6.0 to 10 .236 to .394 0.152 0.006
10 to 18 .394 to .709 0.178 0.007
OVERALL HEIGHT TOLERANCE
18 to 30 .709 to 1.18 0.203 0.008
SPRING THICKNESS OVERALL HEIGHT
30 to 50 1.18 to 1.97 0.254 0.010
Range
TOLERANCE
50 to 80 1.97 to 3.15 0.305 0.012
GROUP MM INCH MM INCH
80 to 120 3.15 to 4.72 0.356 0.014
1
120 to 180 4.72 to 7.09 0.406 0.016
less than less than +0.010 +0.0004
1.25 0.049 -0.05 -0.002 180 to 250 7.09 to 9.84 0.457 0.018
NOTE: For OD, tolerance is MINUS value shown.
1.25 to 0.049 to +0.15 +0.006
For ID, tolerance is PLUS value shown.
2.00 0.078 -0.08 -0.003
2 over 2.00 over 0.078 +0.30 +0.012
LOAD TOLERANCE
to 3.00 to 0.118 -0.10 -0.004 GROUP
TOLERANCE FOR
THICKNESS RANGE LOAD AT
MM INCH DEFLECTION =.75h
over 3.00 over 0.118 +0.30 +0.012
to 6.00 to 0.236 -0.15 -0.006
3 over 6.00 over 0.236
to 14.00 to 0.551
±0.30 ±0.012
DISC SPRING HARDNESS RANGE
THICKNESS OF DISC
MM INCH ROCKWELL C
0.2 to 0.9 .008 to .035 46 to 51
1.0 to 4.0 .039 to .157 44 to 49
4.25 to 16.0 .164 to .630 42 to 48
For Stainless Steel and Inconel, consult SPAENAUR.
CONVERSION TABLE
inches x 25.4 = millimetres
millimetres : 25.4 = inches
1 lb. = .454 kg
1 kg = 2.2 lbs.
1 psi = .0007 kg/mm 2
1 kg/mm 2 = 1422 psi
1 Newton (N) = .225 lbs. force
1 lb. force = 4.44 N
1 N/mm 2 = .102 kg/mm 2 = 145 psi
1 kg/mm 2 = 9.81 N/mm 2 = 1422 psi
Disc Spring Tolerances - Re Pages D54 to D63
Tolérances de rondelles à ressort - Voir pages D54 à D63
less than +25%
1
0.049
1.25 -7.5%
1.25 to
+15%
0.049 - 0.118
3.00 -7.5%
2
over 3.00 +10%
0.118 - 0.236
to 6.00 -5%
over 6.00
3
0.236 - 0.551 ±5%
to 14.00
NOTE: Load will vary in stacked springs in proportion to number of
springs in stack.
When thickness, OA Height AND LOAD VALUES
are specified, the controlling factor shall be the load
shown.
MATERIALS
High-grade spring steel of selected surface condition. Most
commonly used are C-1075 or SAE 6150 chrome vanadium
steel. Other alloy steels are also used. We use 17-7Ph
stainless for corrosion resistance. It is slightly magnetic.
HARDNESS
Disc springs are carefully heat treated with austempering
process, and in such a manner as to prevent surface decarburization.
D
Tel: 1-800-265-8772 Fax: 519-744-0818
D47
29 July 03