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BOSCH REXROTH
R181024051


$2,806.85 USD
  • BOSCH REXROTH
  • Material:R181024051
  • Model:UBPS-2505-BS1A

Quantity in stock: 0

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***Disclaimer: The following summary contains information gathered from various sources such as product descriptions, technical specifications and catalogs. While efforts have been made to provide accurate details, inaccuracies may occur. It is advised to verify all information by contacting Bosch Rexroth directly.***
The Bosch Rexroth BRAKING ELEMENT UBPS 2505 BS1A (R181024051) is a sophisticated pneumatic braking unit designed to provide dynamic and static stabilization in the axial direction for roller rail systems. This high-performance component boasts a solid, rigid steel housing that is chemically nickel-plated, ensuring durability and resistance to wear. It is engineered for compatibility with DIN standards and can be used on all SNS roller guide rails, making it versatile for various applications. With the capability of up to 1 million clamping cycles and up to 250,000 emergency braking operations, this braking element ensures reliability and longevity in demanding operational conditions. Its integrated all-around sealing contributes to its maintenance-free nature, while the mechanical gate valve gear mechanism facilitates high continuous output and precise positioning accuracy. The UBPS 2505 BS1A operates efficiently with extremely low air consumption and includes an integrated quick-exhaust valve for rapid reaction times. The clamping profiles can be held apart by compressed air allowing free movement when necessary. It provides very high axial holding forces of up to 25 kN at 5 bar release pressure with a high-power spring energy accumulator. Additionally, the holding force can be increased up to 50 kN through additional pressurization on the Airplus port. This braking element operates within a permissible ambient temperature range of -30°C to +80°C and has been designed with a focus on safety; in the event of a pressure drop, it generates clamping or braking effect via a dual-acting gate valve gear mechanism equipped with spring assemblies as energy accumulators. The UBPS 2505 BS1A is suitable for various profiled rail systems including sizes A, B, E, H, N, d, and S thread diameter profiled rail systems M6. It has a nominal size indication and weighs approximately 2.7 kg. The functional principle of this unit relies on air pressure ranging from 4 bar (for clamping and braking with spring force) to 6 bar (for decompression with air pressure), offering flexibility according to operational requirements.


Pneumatic braking unit UBPS, 25

Pneumatic braking unit UBPS, FLS for roller rail systems
Size = 25
Can be used on all SNS roller guide rails

Unpacked Weight: 1.080 kg

Functional principle

Air pressure: 0 bar

Clamps and brakes with spring force

In the event of a pressure drop, the clamping or braking effect is generated via a dual acting gate valve gear mechanism, each with one spring assembly (spring energy accumulator).

An integrated quick-exhaust valve provides for short reaction times.

technical illustration-R181024051-Pneumatic braking unit UBPS, 25

Air pressure: 4.5 - 8 bar (MBPS)

5.5 - 8 bar (UBPS)

Decompression with air pressure

The clamping profiles are held apart by the compressed air.

Free movement is possible

technical illustration-R181024051-Pneumatic braking unit UBPS, 25
Dynamic and static stabilization in the axial direction
Compact design, compatible with DIN 645
Integrated all-round sealing
High positioning accuracy
Solid, rigid steel housing, chemically nickel-plated
Can be used on all SNS roller guide rails
Up to 2,000 emergency braking operations
Integrated all-round sealing
High continuous output
High positioning accuracy
Mechanical gate valve gear mechanism
Solid, rigid steel housing, chemically nickel-plated
Extremely low air consumption
Maintenance-free
5 million clamping cycles (B10d value) – the B10d value is not attained with the PLUS connection
Can be used on all SNS roller guide rails
Very high axial holding forces of up to 7700 N at 5.5 bar release pressure with high-power spring energy accumulator
Increased holding force of up to 9,200 N thanks to additional pressurization on the air-plus port
Size B199
Size H (profiled rail system)36
Height of runner block31
Air consumption (normal liter) standard air port0.08
Footnote for spring energy holding force with air-plus portIncreased holding force by additional air admission at air-plus port with 6.0 bar. Switching via 5/2 or 5/3-way directional control valve.
Productgroup ID17
Size E3 (profiled rail systems)20
Size S3 thread diameter (profiled rail systems)M6
Spring energy holding force with standard air port1500
Size E2 (profiled rail systems)45
Permissible ambient temperature (max)+70
Permissible ambient temperature​0 °C ... +70 °C
Footnote for spring energy holding force with standard air portHolding force achieved by spring energy. The inspection is done in a mounted state with a lubricated layer (ISO-VG 68).
Size A (profiled rail systems)70
Size F16.5
Size F211
Permissible ambient temperature (min)0
Width of runner block70
Size d (profiled rail systems)5.5
Spring energy holding force with air-plus port footnote 2Increased holding force by additional air admission at air-plus port with 6.0 bar. Switching via 5/2 or 5/3-way directional control valve.
Size N3 (profiled rail systems)7
Height of runner block with guide rail36
Spring energy holding force with air-plus port2650
Air consumption (normal liter) air-plus port0.165
Linear guide typeAccessories for profiled rail systems
Release pressure min.5.5
Size E620
Type clamping and braking unitsPneumatic
Max. pneumatic operating pressure:8
Size E1 (profiled rail systems)57
Footnote size H1For roller runner block .H. (...High...) Spacer plate necessary.
Size N4 (profiled rail systems)7
Accessories for profiled rail systemsClamping and braking units
Size S2 thread diameter (profiled rail systems)M8
Weight1.080
Size H1 (profiled rail systems)31
Nominal size25

General technical data

Size

25 35 45 55

Spring energy holding force with standard air port 1)

N

1850 2800 5200 7700

Spring energy holding force with air-plus port 1) 2)

N

2650 3800 7600 9200

Air consumption (normal liter) standard air port

dm³/stroke

0.08 0.139 0.153 0.554

Air consumption (normal liter) air-plus port

dm³/stroke

0.165 0.303 0.483 0.952

Max. pneumatic operating pressure

bar

8

Release pressure min.

bar

5.5

Mass

kg

1.2 2.25 6.2 9.4

Operating conditions

Size

25 35 45 55

Permissible ambient temperature (min ... max)

​0 °C ... +70 °C
1) Holding force by spring energy. The inspection is done in a mounted state with a lubricated layer (ISO-VG 68).
2) Increased holding force by additional air admission at air-plus port with 6.0 bar. Circuit across 5/2- or 5/3-way directional control valve.

Circuit1) with standard air connection

technical illustration-R181024051-Pneumatic braking unit UBPS, 25

1) Holding force by spring energy. The inspection is done in a mounted state with a lubricated layer (ISO-VG 68).

a) Air filter

 

1 Air connection

2 Working connection

3 Exhaust

 

Circuit1) for air-plus port

technical illustration-R181024051-Pneumatic braking unit UBPS, 25

1) Increased holding force by additional air admission at air-plus port with 6.0 bar. Circuit across 5/2- or 5/3-way directional control valve.

a) Air-plus port

 

1 Air connection

2 4 Working connections

3 5 Exhaust

 

Clamping

in the event of loss of pressure during assembly work and standstill of the machine without energy of machine tables from machining centers of z-axis positioning in the resting position

Braking

in the event of energy failure in the event of a pressure drop support of the emergency stop function support as brake for linear motors
technical illustration-R181024051-Pneumatic braking unit UBPS, 25
a) Air connection*) G1 on two sides for release pressure
b) Connection*) G2 on two sides for air-plus port or air filter
c) Adjusting screw on two sides
d) Spacer plate (accessory)
e) Exhaust on two sides
f) Air filter: Connection G2 (possible on two sides)
g) At least two middle mounting holes must be used!
*) Only one connection needed.
All connections sealed upon delivery.

Dimensions

Size

25 35 45 55

A

mm

70 100 120 140

B1

mm

99 109 199 197

B3max

mm

112.3 124.8 218.4 215.8

E1

mm

57 82 100 116

E2

mm

45 62 80 95

E3

mm

20 26 30 35

E6

mm

20 24 -

E7

mm

49.5 54.5 99.5 98.5

F1

mm

6.5 8 12 13

F2

mm

11 32

F3

mm

34.3 40.8 167 165

F4

mm

59 66.5 106.5 103.5

G1

3 Verstellelemente

M5 G1/8"

G2

3 Verstellelemente

M5 G1/8"

H

mm

36 48 60 70

H1 1)

mm

31 42 52 60

N3

mm

7 10 -

N4

mm

7 10 12 14

S2

M8 M10 M12 M14

S3

M6 M8 -

SW

Ø8,SW7 Ø15,SW13

X

mm

5.5 6.5
1) for roller runner block .H. (...high...) Spacer plate necessary.

Note for mounting

Stop surfaces can be used on two sides. Make sure the connection structure is rigid. Use only purified air. The prescribed filter mesh size is 25 μm. Observe the mounting instructions prior to commissioning. Check whether the sealing lips of the end seals are resting evenly on the roller guide rail. Realign if necessary.