Kaydon HS6-21E1Z Slewing Bearing Replacement

Name: MERYDOM Replacement for Kaydon HS6-21E1Z Slewing Bearing
Brand: MERYDOM
SKU: HS6-21E1Z

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Kaydon Hs Series External gear outline drawing — Hs Series · External gear outlineClick image to enlarge

MERYDOM BRAND · CERTIFIED REPLACEMENT

HS6-21E1Z

MERYDOM VerifiedLevel 3 · Engineering verification record

MERYDOM-manufactured slewing bearing certified for interchange with Kaydon HS6-21E1Z.

Certified product dataView complete specifications ↓

Overall OD (Do): 25.150 in
Overall ID (di): 17.000 in
Overall height: 2.200 in
Gear arrangement: External gear
Mounting holes: 18 / 15 outer / inner
Bearing design: Four-point contact ball

Factory assurance

Certified dimensional interchange
MERYDOM controlled materials
Factory documentation available

PRODUCT DIMENSIONS

Published dimensions and interfaces

Every available catalog dimension, mounting interface and gear value is shown here in the original published unit.

View complete specifications ↓

Dimensions

Overall outside diameter (Do): 25.150 inapproximately 638.8 mm
Overall inside diameter (di): 17.000 inapproximately 432 mm
Overall height (H): 2.200 inapproximately 56 mm
Assembly weight (G): 108 lbapproximately 48.988 kg

Mounting

Outer ring bolt circle (Lo): 23.250 inapproximately 590.6 mm
Inner ring bolt circle (Li): 18.500 inapproximately 470 mm

Gear

Gear pitch diameter (D2): 24.750 inapproximately 628.7 mm
Diametral pitch (Pd): 4
Gear tooth count (z2): 99

MERYDOM CERTIFIED SPECIFICATION

Kaydon HS6-21E1Z Slewing Bearing Specifications

MERYDOM product identity, certification, materials and dimensional data for the certified replacement.

MERYDOM Factory Verified · Controlled record

Technical parameter	MERYDOM certified product value
MERYDOM Certified Product
Product brand	MERYDOM
MERYDOM model	HS6-21E1Z
Certified interchangeable with	Kaydon HS6-21E1Z
Factory verification	Level 3 · Engineering Verified
Reviewed by	MERYDOM Engineering Department
Verification metadata	Controlled internal record; date and drawing revision are not published.
Materials
Configurable ring material options	42CrMo / 50Mn
Seal material	NBR · Nitrile rubber
Configurable spacer material options	Engineering nylon / Brass
Identification
Reference brand	Kaydon
Series	Hs Series
Reference model	HS6-21E1Z
System of measurement	InchMetric reference shown alongside
Bearing structure	Four-point contact ball
Gear arrangement	External gear
Dimensions
Overall outside diameter (Do)	25.150 inapproximately 638.8 mm
Overall inside diameter (di)	17.000 inapproximately 432 mm
Overall height (H)	2.200 inapproximately 56 mm
Outer ring bolt circle (Lo)	23.250 inapproximately 590.6 mm
Inner ring bolt circle (Li)	18.500 inapproximately 470 mm
Gear pitch diameter (D2)	24.750 inapproximately 628.7 mm
Assembly weight (G)	108 lbapproximately 48.988 kg
Ratings
Maximum gear tooth load (Fz)	5076 lbfapproximately 22.58 kN
Moment load rating (Crm)	72700 ft·lbfapproximately 98.57 kN·m
Mounting
Outer ring bolt holes (no)	18 holes · 0.500-13 UNC-2B; 0.750 min full thread
Inner ring bolt holes (ni)	15 holes · 0.688 through, equally spaced
Gear
Pitch system	DP
Source diametral pitch (Pd)	4 DP
Equivalent module (derived reference only) (m)	6.35 mm
Number of teeth (z2)	99

Level 3 · MERYDOM Engineering VerifiedReviewed by MERYDOM Engineering Department. Evidence date and drawing revision are not published.

SERIES LOAD CAPACITY

Hs Series load chart

Use the model designation in the catalog legend as an initial moment-and-thrust capacity reference.

Engineering selection note

This catalog chart is a preliminary selection aid. Final MERYDOM application approval must also consider mounting rigidity, bolt capacity, duty cycle, lubrication and operating conditions.

MERYDOM ENGINEERING

MERYDOM Replacement for Kaydon HS6-21E1Z

This MERYDOM bearing has been reviewed against the published model envelope, mounting interfaces, gear configuration and declared material specification for replacement use.

Certified interchangeability

Matching model designation and installation envelope
Reviewed mounting-hole and bolt-circle interfaces
Gear arrangement matched to the referenced configuration

MERYDOM construction

Configurable 42CrMo or 50Mn ring material options
NBR nitrile-rubber sealing system
Configurable engineering nylon or brass spacer options

Factory documentation

Engineering verification by MERYDOM Engineering Department
Verification evidence is maintained in the controlled internal record
Drawing revision and final documentation package are confirmed with the quotation

Application confirmation

Confirm support flatness, bolt grade and preload
Verify applied loads, duty cycle and lubrication
Confirm temperature, environment and installation conditions

RELATED CERTIFIED PRODUCTS

Related Kaydon Slewing Bearing References

Each listed MERYDOM model is factory-certified for interchange with the matching referenced-brand model shown on its own product page.

MERYDOM model	Gear	OD × ID × H
HS6-21N1Z	Internal gear	647.7 × 447.04 × 55.88 mm	View details →
HS6-21P1Z	Ungeared	647.7 × 431.8 × 55.88 mm	View details →
HS6-25E1Z	External gear	740.41 × 533.4 × 55.88 mm	View details →
HS6-25N1Z	Internal gear	749.3 × 548.64 × 55.88 mm	View details →

LEGAL & ENGINEERING NOTICE

Independent replacement certification

MERYDOM is the manufacturer and certifying party for the MERYDOM product displayed on this page.
Third-party brand names and model numbers remain the property of their respective owners and are used only to identify the intended interchange reference.
MERYDOM is an independent manufacturer and is not affiliated with, endorsed by or sponsored by the referenced OEM.
The interchangeability statement applies to the matching model designation and the published verification scope; application suitability still depends on loads, duty cycle, installation, lubrication and operating environment.
The approved quotation, manufacturing drawing and contract technical agreement control the final supplied product.