Login

What are you looking for?

Enter search term

We are sorry!

Unfortunately no results were found.

Christmas / New Year shipping times
Our central warehouses will be closed from 23.12.2024 to 01.01.2025. Incoming orders will not be shipped during this period. If necessary, you are welcome to use our branch network during this time. Customer service will be available as usual.

Please note that our branches may have different opening hours during the holidays. For up-to-date information, we recommend calling ahead or checking the current opening times on Google Maps. Due to technical reasons, we are currently unable to update the opening hours on our website. Link to branch search on Google Maps

Login

Have you forgotten your password?

Are you a new customer?

Register and get many benefits:

Checking the product availability
Fast reordering & order history
Personal product recommendation
Payment by invoice
Register now

Help & Contact

Your direct line to us

If you have any questions about the online store or our products, you can call our customer service at:

Phone
+48-601-18-19-18
Mon - Fri, 8:00 AM - 4:00 PM

Or use our FAQ

There you get answers to the most frequently asked questions.

Helping people help themselves
FAQs

QR 448

Quad ring 6.99x240.67 NBR 70SH
QR448

The product image may differ

QR448
QR448 QR448
a
6.99 mm
Ø A
240.67 mm
Download PDF

Please choose a variant

Show table of articles

Article

QR 6 QR 7 QR 8 QR 9 QR 10 QR 11 QR 12 QR 110 QR 111 QR 112 QR 113 QR 114 QR 115 QR 116 QR 117 QR 124 QR 210 QR 211 QR 212 QR 213 QR 214 QR 215 QR 216 QR 217 QR 218 QR 219 QR 220 QR 221 QR 222 QR 223 QR 224 QR 325 QR 326 QR 327 QR 328 QR 329 QR 330 QR 331 QR 332 QR 333 QR 334 QR 335 QR 336 QR 337 QR 338 QR 339 QR 340 QR 341 QR 342 QR 343 QR 344 QR 345 QR 346 QR 347 QR 348 QR 349 QR 356 QR 425 QR 426 QR 427 QR 428 QR 429 QR 430 QR 431 QR 432 QR 433 QR 434 QR 435 QR 436 QR 437 QR 438 QR 439 QR 440 QR 441 QR 442 QR 443 QR 444 QR 445 QR 446 QR 447 QR 448 QR 449 QR 450 QR 451 QR 452 QR 453 QR 454 QR 455 QR 456 QR 457 QR 458 QR 459 QR 460
Please log in to view prices.
Register now to get access to our online shop

Register now and access our complete product range and many exclusive services.

Login / Registration Our customer service: +48-601-18-19-18
Product details for

QR 448

a
6.99 mm
Ø A
240.67 mm

Characteristics

Max. sliding velocity
  • 0.5 m/s
Installation
  • in external and internal grooves 
Construction type
  • quad ring 
Material
  • NBR 70 Shore A 
Max. working pressure
  • up to 150 bar, up to 400 bar with support ring 
Media
  • mineral oil 
  • Hydraulic fluids HFA, HFB 
Temp. max.
  • 110 °C
Temp. min.
  • -30 °C
Working pressure
  • 150 bar
Customs tariff number
  • 40169300 
All characteristics

Product description

Notes
Rotational movements (consult us) up to 2 m/s
QR6, QR7, QR8 must be fitted into an open groove type B
Clearance:
a = 1.78; e max. = 0.05
a = 2.62 - 3.53; e max. = 0.07
a = 5.34 - 6.99; e max. = 0.1
Description
Low spatial requirement and low friction.
Numerous applications possible in static and dynamic sectors, no distortion possible with rotational movements.
Ordering information
For special operating conditions (fluid, temperature, pressure ...) please contact us.
Alternative material possible: NBR 90, EPDM, MVQ, FPM

Product variants

93 Results
Search
Show dimensional drawing
Identifier
a (mm)
Ø A (mm)
Price / items
QR 6
1.78 mm
2.9 mm
Login to see prices
QR 7
1.78 mm
3.68 mm
Login to see prices
QR 8
1.78 mm
4.47 mm
Login to see prices
QR 9
1.78 mm
5.28 mm
Login to see prices
QR 10
1.78 mm
6.07 mm
Login to see prices
QR 11
1.78 mm
7.65 mm
Login to see prices
QR 12
1.78 mm
9.25 mm
Login to see prices
QR 110
2.62 mm
9.19 mm
Login to see prices
QR 111
2.62 mm
10.77 mm
Login to see prices
QR 112
2.62 mm
12.37 mm
Login to see prices

Shows 10 of 93

Column selection

a (mm)
Ø A (mm)