General Information about RotoPrecision Precision Ground Case Hardened Linear Shafting

RotoPrecision Case-Hardened Precision Ground Linear Shafting

RotoPrecision Precision Ground Case Hardened Linear Shafting

RotoPrecision is pleased to offer one of largest ranges of case-hardened precision-ground linear shafting in Canada supported by extensive inventories in strategically located warehouses and in-house cutting facilties for rapid turn-around. Ask us about our same day deliveries!

Shaft Features

Nominal Diameters
RotoPrecision offers one of the widest ranges of standard inch and metric diameters in Canada ranging from 1/8" to 4" and from 2mm to 150mm.

Available Tolerances
Stocked tolerances in inch include Class L, S, R(N) and D(oversize) and in metric h6(M). Custom diameters and special precision tolerances are also available.

Shaft Lengths
Single length shafts are available up to 240” for most diameters including 3/4” and above, and 188" for diameters below 3/4". Extra-long lengths are available by special order.

Length Tolerances
Our standard length tolerance is ±1/32" for diameters below 2" and ±1/16" for diameters including 2" and above. Tighter tolerances are available by special order.

Material Options
Standard material is induction case-hardened carbon steel with a Rockwell hardness of 60-65C. Other materials available include stainless steel (Rockwell 50-55C), chrome-plated steel, tubular carbon and tubular stainless steel. Special materials can be supplied as required.

Quantity and Delivery
For regular stock, shafts can be cut and shipped from one of our multiple stocking locations in Toronto, Montreal (Dorval) or Coquitlam (Vancouver) on the same day that the order is received. All shafts are coated with a corrosion inhibitor and packaged in cardboard tubes or wooden crates for protection and to ensure that straightness tolerances are maintained during transport. Alternative packaging methods are available. Customized delivery times and schedules can be arranged if requested.

Pre-Drilled Shafting
A wide range of pre-drilled linear shafting and support rails for any number of configurations and applications are available. Please click here for more information.

Custom Machining:
A full range of machining services are available including special chamfers, straightness tolerances and surface finishes as well as custom drilling, tapping, flats and keyways. in addition, our European machining facility can custom grind linear shafting to any diameter, tolerance and to any other specifications that you may require. At RotoPrecision, we make special shafts standard. Let us help you simplify your ordering process by managing your machining requirements.  Please click here for more information.

Custom Assemblies
RotoPrecision stocks one of the largest ranges of linear bearings, bushings and housings in Canada. Why manage multiple orders from multiple vendors when you can get it all at one place?

Application Support
RotoPrecision offers full Application Support Services to assist you with your shafting inquiries including design information, technical drawings, deflection calculations, and helpful advice when you need to consider creative solutions to difficult applications.

Brochures

Linear Shafting 2015

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Arbres de Précision 2015

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(179 KB)

Quick Links

•  Linear Shafting
•  Pre-Drilled Shafting
•  Custom Shafting

Related Products

•  NB Linear Slide Shafts
•  NB Linear Motion Products


Nominal Diameter, Class and Tolerance Tables (Inch and Metric)

Inch (inch dimensions unless specifed otherwise)
Nominal Diameter (inch) Class L Class S Class R
(Class N)
Class D (Oversize) Min. Depth of Hardness Weight (lb/inch)
Lower Upper Lower Upper Lower Upper Lower Upper
3/16 0.1865 0.1870 0.1860 0.1865 0.1873 0.1875 -- -- 0.040 0.008
1/4 0.2490 0.2495 0.2485 0.2490 0.2498 0.2500 -- -- 0.040 0.014
3/8 0.3740 0.3745 0.3735 0.3740 0.3748 0.3750 -- -- 0.040 0.031
1/2 0.4990 0.4995 0.4985 0.4990 0.4998 0.5000 -- -- 0.060 0.056
5/8 0.6240 0.6245 0.6235 0.6240 0.6248 0.6250 -- -- 0.060 0.087
3/4 0.7490 0.7495 0.7485 0.7490 0.7498 0.7500 -- -- 0.085 0.125
7/8 0.8740 0.8745 0.8735 0.8740 0.8748 0.8750 -- -- 0.085 0.170
1 0.9990 0.9995 0.9985 0.9990 0.9998 1.0000 1.0000 1.0003 0.085 0.223
1-1/8 1.1240 1.1245 1.1235 1.1240 1.1248 1.1250 -- -- 0.085 0.282
1-1/4 1.2490 1.2495 1.2485 1.2490 1.2498 1.2500 1.2500 1.2503 0.085 0.348
1-3/8 1.3740 1.3745 1.3735 1.3740 1.3747 1.3750 -- -- 0.085 0.421
1-1/2 1.4989 1.4994 1.4984 1.4989 1.4997 1.5000 1.5000 1.5003 0.140 0.501
1-5/8 1.6240 1.6245 1.6235 1.6240 1.6247 1.6250 -- -- 0.140 0.588
1-3/4 1.7490 1.7495 1.7485 1.7490 1.7497 1.7500 -- -- 0.140 0.682
2 1.9987 1.9994 1.9980 1.9987 1.9997 2.0000 2.0000 2.0003 0.140 0.890
2-1/2 2.4985 2.4993 2.4977 2.4985 2.4996 2.5000 -- -- 0.140 1.391
3 2.9983 2.9992 2.9974 2.9983 2.9996 3.0000 -- -- 0.140 2.003
3-1/2 3.4980 3.4990 3.4974 3.4983 3.4996 3.5000 -- -- 0.160 2.726
4 3.9976 3.9988 3.9964 3.9976 3.9996 4.0000 -- -- 0.160 3.560
Metric (mm dimensions unless specifed otherwise)
Nominal Diameter (mm) Class h6
(Class M)
Class g6 Class g5 Min. Depth of Hardness Weight (lb/in)
Lower Upper Lower Upper Lower Upper
3 2.992 3.000 2.988 2.996 2.991 2.996 1.0 0.003
4 3.992 4.000 3.988 3.996 3.991 3.996 1.0 0.006
5 4.992 5.000 4.988 4.996 4.991 4.996 1.0 0.009
6 5.991 6.000 5.986 5.995 5.989 5.995 1.0 0.013
8 7.991 8.000 7.986 7.995 7.989 7.995 1.0 0.022
10 9.989 10.000 9.983 9.994 9.986 9.994 1.0 0.035
12 11.989 12.000 11.983 11.994 11.986 11.994 1.6 0.050
13 12.989 13.000 12.983 12.994 12.986 12.994 1.6 0.058
14 13.989 14.000 13.983 13.994 13.986 13.994 1.6 0.068
15 14.989 15.000 14.983 14.994 14.986 14.994 1.6 0.078
16 15.989 16.000 15.983 15.994 15.986 15.994 1.6 0.088
18 17.987 18.000 17.980 17.993 17.984 17.993 2.2 0.112
20 19.987 20.000 19.980 19.993 19.984 19.993 2.2 0.138
25 24.987 25.000 24.980 24.993 24.984 24.993 2.2 0.216
30 29.984 30.000 29.975 29.991 29.980 29.991 2.2 0.311
32 31.984 32.000 31.975 31.991 31.980 31.991 2.2 0.353
40 39.984 40.000 39.975 39.991 39.980 39.991 3.5 0.553
50 49.981 50.000 49.971 49.990 49.977 49.990 3.5 0.862
60 59.981 60.000 59.971 59.990 59.977 59.990 3.5 1.243
80 79.978 80.000 79.966 79.988 79.973 79.988 3.5 2.212
100 99.978 100.000 99.966 99.988 99.973 99.988 4.0 3.455
120 119.975 120.000 119.961 119.986 119.968 119.986 4.0 4.973
150 149.975 150.000 149.961 149.986 149.968 149.986 4.0 7.784
For additional information about
Linear Shafting, please contact Application Support.


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