MTK+
Suffix and prefix overview
Author Kevin Drake
Released by Koen Geeraerts
Release date 26 June 2016
Document Id D-833
Version 1.2
Revision date 14 July 2016
Deep groove ball bearings
Prefix Suffix Description
RS Rubber seal at one side of the bearing
2RS Rubber seals at both sides of the bearing
Z Pressed steel shield at one side of the bearing
2Z Pressed steel shields at both sides of the bearing
TN Polyamide cage
M Machined brass cage
K Tapered bearing bore
N Circular groove in the outer ring
NR Circular groove in the outer ring with an inserted snap ring
EMQ Electric Motor Quality
SS Stainless steel
SS FM222 Stainless steel with food grade grease (Mobil FM222)
Self-aligning ball bearings
Prefix Suffix Description
2RS Rubber seals at both sides of the bearing
K Tapered bearing bore
J Steel cage
TN Polyamide cage
M Machined brass cage
MTK+ Bearing Factory NV
J. Chantraineplantsoen 2 Phone +32 2 758.00.70 ° Fax +32 2 758.00.75
3070 Kortenberg – Brussels – Belgium info@mtk-bearings.com ° www.mtk-bearings.com
Thrust ball bearings
Prefix Suffix Description
M Machined brass cage
Single-row angular contact ball bearings
Prefix Suffix Description
A Angle 25°
B Angle 40° = standard
C Angle 15°
J Steel cage
TN Polyamide cage
M Machined brass cage
DT Tandem configuration
DB Back-to-back configuration
DF Face-to-face configuration
RS Rubber seal at one side of the bearing
2RS Rubber seals at both sides of the bearing
Double-row angular contact ball bearings
Prefix Suffix Description
A Angle 32°
D Angle 45°
RS Rubber seal at one side of the bearing
2RS Rubber seals at both sides of the bearing
Z Pressed steel shield at one side of the bearing
2Z Pressed steel shields at both sides of the bearing
TN Polyamide cage
M Machined brass cage
Tapered roller bearings
Prefix Suffix Description
X Standard designation
A Increased loading capacity
B Enlarged contact angle
DT Tandem configuration
DB Back-to-back configuration
DF Face-to-face configuration
D-833 MTK+ Suffix and prefix overview Page 2 of 5
Full complement cylindrical roller bearings
Prefix Suffix Description
SL01 48.. Locating bearing - double row full complement
SL01 49.. Locating bearing - double row full complement
SL02 48.. Non-locating bearing - double row full complement
SL02 49.. Non-locating bearing - double row full complement
SL04 1.. Locating bearing - sealed double row full complement with snap ring grooves
SL04 2.. Locating bearing - sealed double row full complement with snap ring grooves
SL04 5… Locating bearing - sealed double row full complement with snap ring grooves
SL18 18.. Semi-locating bearing - single row full complement
SL18 22.. Semi-locating bearing - single row full complement
SL18 29.. Semi-locating bearing - single row full complement
SL18 30.. Semi-locating bearing - single row full complement
SL18 48.. Semi-locating bearing - double row full complement
SL18 49.. Semi-locating bearing - double row full complement
SL18 50.. Semi-locating bearing - double row full complement
SL19 23 Semi-locating bearing - single row full complement
PP Seals on both sides
PP-H Seals on both sides - improved design
A Modified internal design
B Modified internal design
TB Increased axial load carrying capacity
RR Anti-corrosion coating – passivated zinc plating
2NR 2 snap rings fitted
W5 Lubrication groove and three lubrication holes in the inner and outer ring
R0.5 Snap ring grooves with radius R0.5
X Altered design with snap ring grooves on the both sides of the outer ring
X01 Altered design with snap ring grooves on the both sides of the outer ring and
loose rib with seal fitted
Single row cylindrical roller bearings
Prefix Suffix Description
E Steel cage - increased loading capacity
EM Machined brass cage, guided on the rolling elements - increased loading capacity
EMA Machined brass cage, guided on the outer ring - increased loading capacity
ETN Polyamide cage - increased loading capacity
M Machined brass cage, guided on the rolling elements
MA Machined brass cage, guided on the outer ring
K Tapered bore - taper 1:12
N Circular groove in the outer ring for snap ring
NA Non interchangeable rings
NU Non-locating - two integral flanges on the outer ring and no on the inner ring
N Non-locating - two integral flanges on the inner ring and no on the outer ring
NJ Semi locating - two integral flanges on the outer ring and one on the inner ring
NUP Locating - two integral flanges on the outer ring, one on the inner ring
and one non-integral (loose) flange ring on the inner ring
D-833 MTK+ Suffix and prefix overview Page 3 of 5
Double row cylindrical roller bearings
Prefix Suffix Description
K Tapered bore - taper 1:12
W33 Lubrication groove and three lubrication holes in the outer ring
NN Inner ring with three integral flanges, roller guided
NNU Outer ring with three integral flanges, roller guided
Thrust cylindrical roller bearings
Prefix Suffix Description
TN Polyamide cage
M Machined brass cage
EM Machined brass cage - increased loading capacity
ZRB Rollers with logarithmic profile
C-MP Manganese-phosphate coating
Spherical roller bearings
Prefix Suffix Description
C Steel cage
CA One piece machined brass cage, guided on the inner ring
M Two piece machined brass cage, guided on the inner ring
MB Two piece machined brass cage, guided on the inner ring
MA Two piece machined brass cage, guided on the outer ring
CAMA One piece machined brass cage, guided on the outer ring
CAF1 One-piece carbon steel cage, guided on the inner ring
CAF2 One-piece graphite cage, guided on the inner ring
CAF3 One-piece nodular cast iron cage, guided on the inner ring
W33 Lubrication groove and three lubrication holes in the outer ring
W33X Lubrication groove and six lubrication holes in the outer ring
W20 Three lubrication holes in the outer ring
2CS5 sealed spherical roller bearing
F80 Stricter internal tolerances
K Tapered bore 1:12
K30 Tapered bore 1:30
A Split outer ring
Spherical roller thrust bearings
Prefix Suffix Description
E Steel cage - increased loading capacity
TN Polyamid cage
M Machined brass cage
EM Machined brass cage - increased loading capacity
D-833 MTK+ Suffix and prefix overview Page 4 of 5
General information
Prefix Suffix Description
C1 Radial internal clearance less than C2
C2 Radial internal clearance less than normal
CN Normal radial internal clearance
C3 Radial internal clearance greater than normal
C4 Radial internal clearance greater than C3
C5 Radial internal clearance greater than C4
S0 Operating temperature up to 150°
S1 Operating temperature up to 200°
S2 Operating temperature up to 250°
S3 Operating temperature up to 300°
P4 Dimensional and running accuracy to ISO tolerance class 4 (better than P5)
P5 Dimensional and running accuracy to ISO tolerance class 5 (better than P6)
P6 Dimensional and running accuracy to ISO tolerance class 6 (better than normal)
LR 3.2 With LR EN 10204 3.2 certificate
D-833 MTK+ Suffix and prefix overview Page 5 of 5
