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Guideways QH

SynchMotion technology is applied in profile linear guideways of QH series by Hiwin brand. The balls are separated with each other by a plastic separator, that gives an advantage of the speed and low-noise motion. The guideways of QH series were developed on the basis of the linear guideways of HG series, so it is possible to interchange the carriages of QH and HG series. The positional linear guideways of QH series are ideal for conditions that ensure quiet motion of the carriage at high speed.


Hiwin's linear guideways of QH series


 

 

Features of QH seriesс

  1. Low noise level. Noise level reduction became possible by applying SynchMotin technology - the rolling elements (balls) are located between the dividers (separators) causing the contact and possible collision between the balls are eliminated, the circulation of rolling elements in the system is improved, that leads to the noise level reduction.

  2. Self-lubricating design. The partitions between rolling elements are designed as the hollow rings with a through hole to ease the lubricant circulation. The special design of the lubricant path reduces the frequency of the lubricant reservoir replenishing. The rail guideways of QH series are supplied as the pre-lubricated. A productivity testing at 0,2C (the dynamic load) showed that after the 2500km damage of the rolling elements and the circulation path is not revealed.

  3. Smooth movement. In standard linear guideways the rolling elements collide with each other when they start a moving, creating a friction force. This causes an increase of the resistance to the rolling. Due to SynchMotion technology, the profile rail guideways of QH series by Hiwin brand prevent this condition. When the block starts moving, the rolling elements begin their rolling consistently without touching each other, thus keeping the kinetic energy of the rolling elements and reducing resistance force to the rolling.

  4. High productivity (speed). QH series shows the high speed characteristics and maximum productivity, due to SynchMotin technology. It is used for separating the adjacent balls thus resulting the low data of adhesion and friction between the adjacent balls.

Accuracy classes

Accuracy classes of QH series are classified into:

  • - normal (C),
  • - high (H),
  • - precision (Р),
  • - super precision (SP),
  • - ultra precision (UP).
The choice depends on the equipment requirements.

Accuracy classes of non-interchangeable system

Accuracy of non-interchangeable guideways
Item QH-15,20 QH-25,30,35 QH-45
Accuracy Classes C H P SP UP C H P SP UP C H P SP UP
Dimensional tolerance of height H ±0.1 ±0.03 -0.03 -0.015 -0.008 ±0.1 ±0.04 -0.04 -0.02 -0.01 ±0.1 ±0.05 -0.05 -0.03 -0.02
Dimensional tolerance of width N ±0.1 ±0.03 -0.03 -0.015 -0.008 ±0.1 ±0.04 -0.04 -0.02 -0.01 ±0.1 ±0.05 -0.05 -0.03 -0.02
Variation of height H 0.02 0.01 0.006 0.004 0.003 0.02 0.015 0.007 0.005 0.003 0.03 0.015 0.007 0.005 0.003
Variation of width N 0.02 0.01 0.006 0.004 0.003 0.03 0.015 0.007 0.005 0.003 0.03 0.02 0.01 0.007 0.005
Running parallelism of block surface C to surface A Watch the table "Accuracy of Running Parallelism"
Running parallelism of block surface D to surface B

 

 Accuracy classes of interchangeable system

Accuracy of interchangeable guideways
Item QH-15,20 QH-25,30,35 QH-45
Accuracy Classes C H P C H P C H P
Dimensional tolerance of height H ±0.1 ±0.03 ±0.015 ±0.1 ±0.04 ±0.02 ±0.1 ±0.05 ±0.025
Dimensional tolerance of width N ±0.1 ±0.03 ±0.015 ±0.1 ±0.04 ±0.02 ±0.1 ±0.05 ±0.025
Variation of height H 0.02 0.01 0.006 0.02 0.015 0.007 0.03 0.015 0.007
Variation of width N 0.02 0.01 0.006 0.03 0.015 0.007 0.03 0.02 0.01
Running parallelism of block surface C to surface A Watch the table "Accuracy of Running Parallelism"
Running parallelism of block surface D to surface B

 


Accuracy of Running Parallelism

Rail Length (mm)
Accuracy (μm)
C H P SP UP
100 12 7 3 2 2
100-200 14 9 4 2 2
200-300 15 10 5 3 2
300-500 17 12 6 3 2
500-700 20 13 7 4 2
700-900 22 15 8 5 3
900-1100 24 16 9 6 3
1100-1500 26 18 11 7 4
1500-1900 28 20 13 8 4
1900-2500 31 22 15 10 5
2500-3100 33 25 18 11 6
3100-3600 36 27 20 14 7
3600-4000 37 28 21 15 7

Preload

Preload QH

Definition

The preload can be set for each profile rail guideway. For this purpose oversized balls are used. Usually a negative clearance between the rolling surface and balls is used in the profile rail guideways for increase of the rigidity and accuracy. The curve shows that rigidity doubles with the strong preload. To avoid premature wear of the system, the preload over ZA type is not recommended for profile guideways, size of which is less than 20.

 

Preload classes

There are three types of standard preload for different application conditions.

Class Code Preload Condition Examples of Application
Light Preload Z0 0-0.02C

Certain load direction,low impact, low precision required

Transportation devices, auto-packing machines, X-Y axis for general industrial machines, welding machines, welders

Medium Preload ZA 0.05C-0.07C High precision required

Machining centers, Z axis for general industrial, machines, EDM, NC lathes, Precision X-Y tables, measuring equipment

Heavy Preload ZB 0.10C-0.12C

High rigidity required, with vibration and impact

Machining centers, grinding machines, NC lathes, horizontal and vertical milling machines, Z axis of machine tools, Heavy cutting machines

 

"C" means the dynamic load capacity in the column "Preload".

Class Interchangeable Guideway Non-Interchangeable Guideway
Preload classes Z0, ZA Z0,ZA,ZB

 

QHH-CA/QHH-HA

 

 

Model No. Dimensions of Assembly
(mm)
Dimensions of Block (mm) Dimensions of Rail (mm) Mounting
Bolt for
Rail
Basic
Dynamic
Load
Rating
Basic
Static
Load
Rating
Static Rated
Moment
Weight
H H1 N W B B1 C L1 L G Mxl T H2 H3 Wr Hr D h d P E (mm) C(kN) C0(kN) Mr kN-m Mp kN-m My kN-m Block
kg
Rail
kg/m
QHH 15CA 28 4 9,5 34 26 4 26 39,4 61,4 5,3 M4x5 6 7,95 7,7 15 15 7,5 5,3 4,5 60 20 M4x16 13.88 14.36 0.1 0,08 0,08 0,18 1,45
QHH 20CA 30 4,6 12 44 32 6 36 50.5 76.7 12 М5х6 8 6 6 20 17.5 9.5 8.5 6 60 20 М5х16 23.08 25.63 0.26 0.19 0.19 0.29 2.21
QHH 20HA 50 65.2 91.4 27.53 31.67 0.31 0.27 0.27 0.38
QHH 25CA 40 5,5 12.5 48 35 6.5 35 58 83.4 12 М6х8 8 10 8.5 23 22 11 9 7 60 20 М6х20 31.78 33.68 0.39 0.31 0.31 0.50 3.21
QHH 25HA 50 78.6 104 39.30 43.62 0.5 0.45 0.45 0.68
QHH 30CA 45 6 16 60 40 10 40 70 97.4 12 М8х10 8.5 9.5 9 28 26 14 12 9 80 20 М8х25 46.49 48.17 0.6 0.5 0.5 0.87 4.47
QHH 30HA 60 93 120.4 56.72 65.09 0.83 0.89 0.89 1.15
QHH 35CA 55 7,5 18 70 50 10 50 80 113.6 12 М8х12 10.2 15.5 13.5 34 29 14 12 9 80 20 М8х25 60.52 63.84 1.07 0.76 0.76 1.44 6.30
QHH 35HA 72 105.8 139.4 73.59 86.24 1.45 1.33 1.33 1.90
QHH 45CA 70 9,2 20.5 86 60 13 60 97 139.4 12,9 М10х17 16 18.5 20 45 38 20 17 14 105 22.5 М12х35 89.21 64.81 1.83 1.38 1.38 2.72 10.41
QHH 45HA 80 128.8 171.2 108.72 128.43 2.47 2.41 2.41 3.59

 

QHW-CA/QHW-HA

 

Model No. Dimensions of Assembly
(mm)
Dimensions of Block (mm) Dimensions of Rail (mm) Mounting
Bolt for
Rail
Basic
Dynamic
Load
Rating
Basic
Static
Load
Rating
Static Rated
Moment
Weight
H H1 N W B B1 C L1 L G Mxl T T1 H2 H3 Wr Hr D h d P E (mm) C(kN) C0(kN) Mr kN-m Mp kN-m My kN-m Block
kg
Rail
kg/m
QHW 15CA 28 4 16 47 38 4.5 30 39,4 61,4 5,3 M5 6 8.9 3,95 4.2 15 15 7,5 5,3 4,5 60 20 M4x16 13.88 14.36 0.1 0,08 0,08 0,18 1,45
QHW 20CA 30 4,6 21.5 64 53 5 40 50.5 76.7 12 М6 8 10 6 6 20 17.5 9.5 8.5 6 60 20 М5х16 23.08 25.63 0.26 0.19 0.19 0.29 2.21
QHH 20HA 65.2 91.4 27.53 31.67 0.31 0.27 0.27 0.38
QHW 25CA 36 6 23.5 70 57 6.5 45 58 83.4 12 М8 8 14 6 4.5 23 22 11 9 7 60 20 М6х20 31.78 33.68 0.39 0.31 0.31 0.50 3.21
QHW 25HA 78.6 104 39.30 43.62 0.5 0.45 0.45 0.68
QHW 30CA 42 6 31 72   9 52 70 97.4 12 М10 8.5 16 6.5 6 28 26 14 12 9 80 20 М8х25 46.49 48.17 0.6 0.5 0.5 0.87 4.47
QHW 30HA 93 120.4 56.72 65.09 0.83 0.89 0.89 1.15
QHW 35CA 48 7,5 33 82 50 9 62 80 113.6 12 М10 10.1 18 8.5 6.5 34 29 14 12 9 80 20 М8х25 60.52 63.84 1.07 0.76 0.76 1.44 6.30
QHW 35HA 105.8 139.4 73.59 86.24 1.45 1.33 1.33 1.90
QHW 45CA 60 9,2 37.5 100 60 10 80 97 139.4 12,9 М12 15.1 22 8.5 10 45 38 20 17 14 105 22.5 М12х35 89.21 64.81 1.83 1.38 1.38 2.72 10.41
QHW 45HA 128.8 171.2 108.72 128.43 2.47 2.41 2.41 3.59

 

Dust proof

Interchangeable type
 

QH - W - 25 - C - A - E - ZA - P + KK/E2

QH - Series

W - Block Type:
W: Flange Type;
H: Square Type.

25 - Model size 
(15; 20; 25; 30; 35; 45)

С - Load Type:
С: Heavy Load;
H: Super Heavy Load.

A - Block Mounting 
A: Mounting From Top;
B: Bottom;
С: Top or Bottom

E - Special Block
None: Standard Block

ZA, Z0 - Preload Code

P - Precision Code
(C, H, P)

KK - Dust Protection2 
E2 - Self-lubrication Type

 

Non-interchangeable type
 

QH - W - 25 - C - A - E - 2 - R - 1600 - E - ZA - P - ll - + KK/RC/E2

QH - Series

W - Block Type
W: Flange Type;
H: Square Type.

25 - Model size 
(15; 2025; 3035; 45)

С - Load Type 
С: Heavy Load;
H: Super Heavy Load.

A - Block Mounting
A: Mounting From Top;
B: Bottom;
С: Top or Bottom.

E - Special Block
None: Standard Block

2No. of Blocks per Rail

R - Rail Mounting Type 
R: Mounting From Top 
T: Bottom

1600 - длина направляющей (мм)

E - Special Rail
None: Standard Rail

ZA, Z0, ZB - Preload Code

P - Precision Code 
(C, H, P, SP, UP)

ll - No. of Rails per Axis set1

KK - Dust Protection2 
RC - Reinforced Cap
E2 - Self-lubrication Type

1. The roman numerals indicate the number of guideways in the set.
2. The absence of designation indicates the standard designation (end seal and bottom seal):
ZZ: End seal, bottom seal and scraper;
KK: Double seals, bottom seal and scraper;
DD: Double seals, bottom seal.

Rail designation of the QH series (QH and HG series use identical rails)

HG - R - 25 - R - 1200 - E - P + RC

QH/HG - Series

R -Interchangeable Rail

25 - Model size 
(15; 2025; 3035; 45)

R - Rail Mounting Type:
R: Mounting From Top; 
T: Bottom.

1200 - Rail Length (mm)

E - Special Rail,
None: Standard Rail

P - Precision Code (C,H,P)

RC - Reinforced Cap

 

Open catalog in pdf format
Download catalog in pdf format

 

 

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