No.000227 Slide Table

Good IDEA!

19

Selection criteria

Supports high load and high precision requirements.

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Available sizes

■Linear Guides for Heavy Load (Normal Clearance)

Material	Hardness
Carbon Steel (Alloy Steel including SCM)	58HRC or More

■Sizes and Dimensions

Number of Blocks	Block Width	Block Length		Overall Height	Rail Length
		Standard	With Lubrication Units
1	34	57	66.6	24	100-1480
	42	67	76.6	28	160-1960
	48	83	92.6	33	160-1960
	52	57	66.6	24	100-1480
	59	67	76.6	28	160-1960
	73	83	92.6	33	160-1960
2	34	57 x 2 pcs.	66.6 x 2pcs.	24	160-1480
	42	67×2 pcs.	76.6 x 2pcs.	28	220-1960
	48	83×2 pcs.	92.6 x 2pcs.	33	220-1960
	52	57×2 pcs.	66.6 x 2pcs.	24	160-1480
	59	67×2 pcs.	76.6 x 2pcs.	28	220-1960
	73	83×2 pcs.	92.6 x 2pcs.	33	220-1960

*Please see the product pages for details of selectable sizes.

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Selection steps

■Miniature linear guide selection steps

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Accuracy Info

Preload and accuracy standards (Normal clearance type)

Normal Clearance Type

Overall Height	Radial Clearance (µm)
24	-4－+2
28	-5－+2
33	-6－+3

Dimensional Accuracy (µm)		Standard Grade	High Grade
H Dimension Tolerance		±100	±40
Pair variation of H		20	15
Tolerance of dims. W2		±100	±20
Pair variation of W2	H24・28	20	15
	H33	30

■Running Parallelism

*The slight clearance type has clearances (play) between the rail and blocks.

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Performance info.

■Rated Load of Linear Guides for Heavy Load (Normal Clearance Type)

Overall Height	Basic Load Rating		Allowable Static Moment
	C (Dynamic) kN	Co (Static) kN	MA・MB N・m	Mc N・m
24	8.6	14.2	69.0	98.0
28	12.5	21.3	155.0	232.0
33	20.2	34.5	275.0	393.0

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Technical calculations

■Operating Life Calculation for Linear Guides

●Operating Life

When the linear guide is loaded in linear reciprocating motion, scaly damages called flaking appear due to material fatigue as the stress works on the rolling elements (steel balls) and the rolling contact surfaces (rails) constantly. Total travel distance until the first flaking occurs is called the life of linear guides.

●Rated Life

Rated life is the total travel distance that 90% of linear guides of the same type can reach, under the same conditions, with no occurrence of flaking damage. Rated life can be calculated with the basic dynamic load rating and the actual load applied on the linear guides, as shown below.

Load must be calculated before actually using linear guides. To obtain loads during linear reciprocating motion, it is necessary to fully consider vibrations and impacts during motion as well as distribution condition of the load applied to linear guides. So, it is not easy to calculation the loads. Operating temperature also critically affects the life. Considering these conditions, the above-mentioned calculation formula will be as follows.

• L: Rated Life (Km)
• fH: Hardness Factor (See Fig.1)
• fT: Temperature Factor (See Fig.2)
• fC: Contact Factor (See Table-1)
• fW: Load Factor (See Table-2)
• C: Basic Dynamic Load Rating (N)
• P: Applied Load (N)

●Hardness factor (fH)

For liner guide applications, sufficient hardness is required for ball contact shafts. Inappropriate hardness causes less allowable load, resulting in shorter life.
Please correct the rated life with the hardness factor.

●Temperature factor (fT)

When the temperature of linear guides exceeds 100°C, the hardness of guides and shafts will be reduced, and the allowable loads will also be reduced compared to being used at room temperature, causing a reduction of life. Please correct the rated life with the temperature factor.
* Please use Linear Guides at within the heat resistance temperature ranges shown on product pages.

●Contact factor (fC)

Table-1. Contact Factor

Number of blocks per rail Contact factor fC

1	1.00
2	0.81
3	0.72
4	0.66
5	0.61

For actual applications, more than two blocks are generally used per shaft. In this case, the load applied to each block varies depending on machining precision and is not uniformly distributed. As a result, per-block allowable load varies depending on the number of blocks per rail. Please compensate the rated life with contact factors on Table-1.

●Load Factor (fW)

Table-2. Load Factor

Condition of Use	fw
No shocks / vibrations, low speed: 15 m/min. or less	1.0-1.5
No significant shocks / vibrations, medium speed: 60 m/min. or less	1.5-20
With shocks / vibrations, high speed: 60 m/min. or more	2.0-3.5

To calculate load applied to the Linear Guides, in addition to object weight, it requires inertia force attributed to motion velocity or moment loads. However, it is difficult to calculation the load accurately due to potential vibrations and shocks caused by other element than repeated start-stop motions during reciprocating motion. Thus, Table-2 load factor helps simplify the life calculation.

●Applied Load P Calculation Method

When moment load is applied to each block, convert the moment load into applied load by the following formula.

• P: Applied Load (N)
• F: Downward load (N)
• C0: Static load rating (N)
• MA: Allowable Static Moment - Pitching Direction (N·m)
• MC: Allowable Static Moment - Rolling Direction (N·m)
• Lp: Load point distance (m) in pitching direction
• Lr: Load point distance (m) in rolling direction

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Selection criteria

Connect the timing belt and the moving table

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Available sizes

■Timing belt clamp plates (nut fitting S5M)

Material	Surface Treatment
A6N01-T5 Aluminum Alloy	Clear Anodize

■Sizes and Dimensions

Belt Type	Belt Nominal Width	Vertical (mm)	Horizontal (mm)	Thickness (mm)
MXL	025	26	18	4
	037		22
	050		26
XL	025	66	24	6
	031		25
	037		26
	050		30
L	050	124	32	8
	075		38
	100		46
H	075	165	38	10
	100		46
	150		58
	200		70
S2M	040	26	16	4
	060		18
	100		24
S3M	060	39	18
	100		22
	150		28
S5M	100	65	26	6
	150		32
	250		42
S8M	150	104	34	8
	250		44
	300		50
	400		60
TS	100	65	26	6
	150		32
	200		38
	250		43
T10	150	130	34	8
	200		40
	250		44
	300		50

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Selection criteria

Can be secured easily and steadily just by fastening the screws - Suitable for repeated forward/backward rotations

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Available sizes

■MechaLock (Standard Type (With Centering Function))

Material	Surface Treatment
1045 Carbon Steel	-
	Black Oxide
	Electroless Nickel Plating
304 Stainless Steel	-

■Sizes and Dimensions

I.D.	Outer ring O.D.	Inner ring O.D.	Overall length
5	16	18.5	13
6	19	21.5	14.3
8	21	23.5	14.6
10	23	25.5	14.8
11	24	26.5	15.8
12	26	28.5	18.0
14	28	30.5
15	29	31.5	19.0
16	30	33.0	19.6
17	31	33.5	20.1
18	32	34.5
19	33	35.5
20	38	42.0	24.1
22	40	44.0
24	42	46.0	25.1
25	43	47.0	26.1
28	46	50.0	26.6
30	48	52.0
32	50	54.0	27.6
35	57	62.0	30.0
38	60	65.0	30.5
40	62	67.0	31.0
42	64	69.0
45	67	72.0	31.5
48	70	75.0	32.0
50	72	77.0	32.5
55	77	83.0
60	82	87.0	33.5
65	87	92.0
70	97	103.0	36.1

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