84 catalogued sizes, dimensioned to ISO 1206 / DIN 5405-1. Pick any row and the technical drawing redraws to it.
K Series Needle Roller and Cage Assemblies to ISO 1206 / DIN 5405-1 are catalogued in bore 8-100 mm, with od 11-108 mm, wide 8-30 mm. 84 sizes are held in the table below, and the technical drawing redraws to whichever row you select.
Standard
ISO 1206 / DIN 5405-1
Bore
8-100 mm
OD
11-108 mm
Wide
8-30 mm
Catalogued sizes
84
Dimensions are nominal values from the governing standard. Confirm the tolerance class for your application before ordering.
Technical Drawing
Customize the parameters below — every spec field is editable, and the drawing redraws to match the values you choose. Changing the designation snaps the other fields to that size's standard values; you can then override any individual value.
Sends the selected values to the quote form below.
Request a Quotation for K Series Needle Roller and Cage Assemblies
The form below follows the current technical drawing configuration. Change the drawing values above and the request details update automatically.
Dimensions & Specifications (ISO 1206 / DIN 5405-1)
Every row below is a starting point for the customizer above — pick any size and the drawing will redraw to that row.
Designation
Bore Fw (mm)
Outer diameter Ew (mm)
Width Bc (mm)
K8x11x8
8
11
8
K8x11x10
8
11
10
K8x12x10
8
12
10
K9x12x10
9
12
10
K10x13x10
10
13
10
K10x14x10
10
14
10
K10x14x13
10
14
13
K12x15x13
12
15
13
K12x16x13
12
16
13
K12x18x12
12
18
12
K14x18x13
14
18
13
K14x20x12
14
20
12
K15x19x13
15
19
13
K15x19x17
15
19
17
K15x21x15
15
21
15
K16x20x13
16
20
13
K16x22x12
16
22
12
K16x22x16
16
22
16
K17x21x13
17
21
13
K17x23x13
17
23
13
K18x22x17
18
22
17
K18x24x12
18
24
12
K18x24x13
18
24
13
K19x23x13
19
23
13
K19x23x17
19
23
17
K20x24x13
20
24
13
K20x26x12
20
26
12
K20x26x17
20
26
17
K20x28x16
20
28
16
K21x25x13
21
25
13
K22x26x13
22
26
13
K22x28x17
22
28
17
K24x28x13
24
28
13
K24x30x17
24
30
17
K25x29x13
25
29
13
K25x30x17
25
30
17
K25x31x17
25
31
17
K25x33x24
25
33
24
K26x30x13
26
30
13
K28x33x17
28
33
17
K28x35x16
28
35
16
K30x35x13
30
35
13
K30x37x16
30
37
16
K30x40x18
30
40
18
K32x37x17
32
37
17
K32x39x16
32
39
16
K32x40x25
32
40
25
K35x40x17
35
40
17
K35x42x16
35
42
16
K35x42x20
35
42
20
K35x45x20
35
45
20
K37x42x17
37
42
17
K38x43x17
38
43
17
K40x45x17
40
45
17
K40x47x18
40
47
18
K40x48x20
40
48
20
K42x47x17
42
47
17
K42x50x20
42
50
20
K45x50x17
45
50
17
K45x52x18
45
52
18
K45x53x21
45
53
21
K47x52x17
47
52
17
K50x55x17
50
55
17
K50x57x18
50
57
18
K50x58x20
50
58
20
K55x60x20
55
60
20
K55x63x25
55
63
25
K60x65x20
60
65
20
K60x68x20
60
68
20
K60x68x25
60
68
25
K65x70x20
65
70
20
K65x73x23
65
73
23
K68x74x20
68
74
20
K70x76x20
70
76
20
K70x78x30
70
78
30
K75x81x20
75
81
20
K75x83x23
75
83
23
K80x86x20
80
86
20
K80x88x25
80
88
25
K85x92x20
85
92
20
K90x98x27
90
98
27
K95x103x30
95
103
30
K100x107x21
100
107
21
K100x108x30
100
108
30
K Series Needle Roller and Cage Assemblies (ISO 1206 / DIN 5405-1) are needle roller bearings. The full size table is below, followed by the material and cage options, how the bearing is located on the shaft and in the housing, and where the type is and is not the right choice.
What Are K Series Needle Roller and Cage Assemblies?
K Series Needle Roller and Cage Assemblies are needle roller bearings defined by ISO 1206 / DIN 5405-1. They are selected by bearing designation and the dimensional characteristics shown below. Material, cage and sealing are specified separately from the designation and are covered further down this page.
Materials & Cage
Drawn cups are case-hardened low-carbon steel, formed and then carburized, and they run directly on the shaft — so the SHAFT is a bearing raceway and must be hardened to 58 to 64 HRC and ground to h5 or h6. Machined rings and needles are through-hardened GCr15 / 100Cr6. Where the shaft cannot be hardened, specify a variant with an inner ring instead.
K Series Needle Roller and Cage Assemblies are supplied to order. Pricing starts from approximately US$0.90 per piece for standard sizes in case-hardened steel, without an inner ring; final pricing depends on size, material, finish and order quantity (MOQ applies). Submit your exact configuration with the quote form above.
Specifying the K Series Needle Roller and Cage Assemblies
Where the environment decides the specification rather than the load, the material pages are the ones to read: Case-Hardened 20CrMnTi, Pressed Steel Cage and Polyamide Cage. Each states what the grade survives, and what choosing it costs in load capacity or temperature range.
This bearing is forged, hardened, ground, superfinished and clearance-set in-house. The stages below are where its tolerance class, its internal clearance and its noise grade are actually decided.
01
Forging & turning
GCr15 bar and tube is cut, heated and forged into ring blanks, then turned to leave a uniform grinding allowance. Forging rather than machining from solid keeps the grain flow following the raceway, which is the surface that eventually fails.
Blank dimensions and grinding stock checked at set-up and per shift.
02
Heat treatment
Through-hardening brings GCr15 / 100Cr6 to 58–64 HRC; carburizing case-hardens 20CrMnTi where the section is heavy or the load is shock. Rings are then stabilized so they hold size in service rather than growing in the housing.
Core and surface hardness per lot; retained austenite and dimensional stability to the ordered temperature class.
03
Raceway grinding
Faces, bore, outer diameter and raceway are ground in sequence on separate machines. This is where the tolerance class is created: P0, P6, P5 or P4 is a grinding outcome, not a sorting outcome.
Bore and outer diameter deviation, raceway roundness and face runout measured to ISO 492 on every setup.
04
Honing & superfinishing
The ground raceway is honed to remove the grinding lay and bring surface roughness down to a fraction of a micrometre. Raceway finish is what decides whether a lubricant film forms, and therefore what decides bearing life far more than the load rating alone.
Surface roughness Ra and waviness measured per lot.
Video: K Series Needle Roller and Cage Assemblies
Third-party video, selected automatically for this topic. It is not produced by Bushing Bearings and is not a specification source — use the tables on this page for dimensional data.
Frequently Asked Questions
What standard governs K Series Needle Roller and Cage Assemblies, and how are they mounted?
K Series Needle Roller and Cage Assemblies are manufactured to ISO 1206 / DIN 5405-1, which fixes the boundary dimensions on this page. They are mounted with an interference fit on the shaft and a transition or clearance fit in the housing, chosen from the load case and which ring rotates.
What sizes are available for K Series Needle Roller and Cage Assemblies?
The table on this page lists 84 sizes for K Series Needle Roller and Cage Assemblies, ranging from K8x11x8 to K100x108x30. Sizes outside the table can be quoted on request.
In which materials are K Series Needle Roller and Cage Assemblies supplied?
K Series Needle Roller and Cage Assemblies are supplied in case-hardened drawn cups and through-hardened GCr15 needles; where there is no inner ring the shaft is a raceway and must be hardened to 58-64 HRC. Material is only part of the specification: state the internal clearance group (or preload class), the seal or shield type and the cage material alongside the designation, because all three change the part you receive.
What housing bore do K Series Needle Roller and Cage Assemblies need?
The smallest outer diameter on this page is 11 mm; the housing bore is machined to H7 for a clearance fit or J7 where the outer ring must be located. The full table opposite the drawing lists the outer diameter for every size.
How do I request a quotation?
Use the parametric drawing on this page to set the exact configuration — designation, internal clearance, seal type and cage — and click "Request this configuration". A specialist from Bushing Bearings will respond within one business day.
Need a bearing quote or a spec sheet?Message our engineers on WhatsApp — send a drawing or DIN number and get pricing back fast.Start WhatsApp Chat →
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