Long Service Life Linear Guide

CHTR linear guides rail was is divided into standard slider and lengthened slider. Standard slider is affordable and widely used, Longer slider has stronger load-carrying performance

CHTR linear guide with mature and stable technology, the allowable error of height size M and allowable mutual error of height size M in pairs will be keep in ±0.03 and 0.01.

Linear guides are mainly used in office machine, medical devices, automation machines, drilling machine,laser machine, woodworking machines, etc.

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TRHG20A+TRHG-20B(2)

TRH-A型TRH-AL型

Model	M	W	L	B	C	S	W1	W2	M1	F
TRH15A	24	47	61.8	38	30	M5	15	16	15	60
TRH20A	30	63	77.4	53	40	M6	20	21.5	18	60
TRH20AL	30	63	93.4	53	40	M6	20	21.5	18	60
TRH25A	36	70	83.5	57	45	M8	23	23.5	22	60
TRH25AL	36	70	102.6	57	45	M8	23	23.5	22	60
TRH30A	42	90	100.5	72	52	M10	28	31	26	80
TRH30AL	42	90	123	72	52	M10	28	31	26	80
TRH35A	48	100	113.9	82	62	M10	34	33	29	80
TRH35AL	48	100	139.2	82	62	M10	34	33	29	80
TRH45A	60	120	138.5	100	80	M12	45	37.5	38	105
TRH45AL	60	120	169.5	100	80	M12	45	37.5	38	105

Data unit is mm

工厂图

In harsh environments, such as ovens and dryers, a copper and graphite alloy, commonly known by the trademarked name graphalloy, is used. The graphite is a dry lubricant, therefore it is low friction and low maintenance. The copper adds strength, durability, and provides heat dissipation characteristics.

Known as jewel bearings, these bearings use jewels, such as sapphire, ruby, and garnet.

Common motions permitted by bearings are:

Radial rotation e.g. shaft rotation
linear motion e.g. drawer
spherical rotation e.g. ball and socket joint
hinge motion e.g. door, elbow, knee

There is still room for discussion as to whether the rolling element excites the natural frequencies of bearing component when it passes the fault on the outer race. Hence we need to identify the bearing outer race natural frequency and its harmonics. The bearing faults create impulses and results in strong harmonics of the fault frequencies in the spectrum of vibration signals. These fault frequencies are sometimes masked by adjacent frequencies in the spectra due to their little energy. Hence, a very high spectral resolution is often needed to identify these frequencies during a FFT analysis. The natural frequencies of a rolling element bearing with the free boundary conditions are 3 kHz. Therefore, in order to use the bearing component resonance bandwidth method to detect the bearing fault at an initial stage a high frequency range accelerometer should be adopted, and data obtained from a long duration needs to be acquired. A fault characteristic frequency can only be identified when the fault extent is severe, such as that of a presence of a hole in the outer race. The harmonics of fault frequency is a more sensitive indicator of a bearing outer race fault. For a more serious detection of defected bearing faults waveform, spectrum and envelope techniques will help reveal these faults. However, if a high frequency demodulation is used in the envelope analysis in order to detect bearing fault characteristic frequencies, the maintenance professionals have to be more careful in the analysis because of resonance, as it may or may not contain fault frequency components.

Long Service Life Linear Guide

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